Is there data that you would like to keep that is on the disk? If so I would back your files up first using your Windows 10 to either another drive (usb thumb drive, cloud, or external hard drive).
After that I would use an Ubuntu live USB stick to format the disk (this destroys any data left on the disk) with gparted (install it by typing on your terminal:
sudo su
hit enter and then:
apt install gparted
What are you going to do with the disk? Use it with Windows or Linux? Will you use it as storage only, or are you going to install an operating system on it?
If you are going to install linux on it or use it as storage in conjuction with a linux operating system, just format it using gparted to Ext4.
If you are going to use it to install windows or as storage for a windows computer, use gparted to format it to NTFS.
Maybe it's also good to ask oneself, "Do I prefer being a user of my computer while using Windows 10 or 11, or do I prefer to be the owner of my computer while running Linux?"