I wanted to try out nala un my Kubuntu 22.04 OS. I ran sudo apt search nala and saw that nala was available in apt, so i ran sudo apt install nala . I then ran sudo nala fetch, because that is what many youtubers were running. I selected the first 3 mirrors that were the fasted and then ran sudo nala update and i got errors. I then ran sudo apt update to check if that was only the problem with nala, but no, it was with apt. Maybe the fetch command broke something? Here are the errors:
Get:1 http://ubuntu.uni-klu.ac.at/ubuntu jammy InRelease [270 kB]
Hit:2 http://mirror.eu-fr.kamatera.com/ubuntu jammy InRelease
Hit:3 http://me.archive.ubuntu.com/ubuntu jammy InRelease
Hit:4 http://me.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:5 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:6 https://deb.opera.com/opera-stable stable InRelease
Hit:7 https://deb.nodesource.com/node_18.x jammy InRelease
Get:8 http://me.archive.ubuntu.com/ubuntu jammy-backports InRelease [108 kB]
Ign:9 https://repo.vivaldi.com/stable/deb stable InRelease
Hit:10 https://ppa.launchpadcontent.net/flexiondotorg/obs-fully-loaded/ubuntu jammy InRelease
Hit:11 https://repo.vivaldi.com/stable/deb stable Release
Hit:12 http://security.ubuntu.com/ubuntu jammy-security InRelease
Err:13 http://mirror.deace.id/ubuntu jammy InRelease
400 Bad Request [IP: 185.53.177.54 80]
Hit:14 https://packages.microsoft.com/repos/vscode stable InRelease
Ign:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
Get:16 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main amd64 Packages [1395 kB]
Get:17 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main Translation-en_GB [483 kB]
Get:18 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main Translation-en [510 kB]
Get:19 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main amd64 DEP-11 Metadata [423 kB]
Get:20 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main DEP-11 48x48 Icons [100.0 kB]
Get:21 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main DEP-11 64x64 Icons [148 kB]
Get:22 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main DEP-11 64x64@2 Icons [15.8 kB]
Get:23 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main DEP-11 128x128 Icons [311 kB]
Get:24 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main amd64 c-n-f Metadata [30.3 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Get:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages [30.4 kB]
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Ign:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Ign:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Ign:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Ign:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Err:15 http://ubuntu.uni-klu.ac.at/ubuntu jammy/main i386 Packages
404 Not Found [IP: 143.205.176.63 80]
Ign:25 http://ubuntu.uni-klu.ac.at/ubuntu jammy/restricted i386 Packages
Ign:50 http://ubuntu.uni-klu.ac.at/ubuntu jammy/universe i386 Packages
Ign:51 http://ubuntu.uni-klu.ac.at/ubuntu jammy/multiverse i386 Packages
Hit:33 https://packagecloud.io/slacktechnologies/slack/debian jessie InRelease
Reading package lists... Done
E: Failed to fetch http://mirror.deace.id/ubuntu/dists/jammy/InRelease 400 Bad Request [IP: 185.53.177.54 80]
E: The repository 'http://mirror.deace.id/ubuntu jammy InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
I have already removed nala from my pc using sudo apt remove nala and sudo apt purge nala but i get the same errors. Thanks for your help.
Edit: i saw some other similar questions and did what @kanehekili said, i saw the mirrors listed in KDE Discover in settings and i am not seeing the errors anymore . Hope that is not a temporary fix.