i used this tutorial to install RStudio https://linuxhint.com/rstudio-for-ubuntu/
but when i started on this phase sudo gdebi -n rstudio-0.99.896-amd64.deb
it's says
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading state information... Done
This package is uninstallable
Dependency is not satisfiable: libgstreamer0.10-0
The rstudio-0.99.896-amd64.deb is completely outdated. You are referring to the 3 years old post.
You should use official RStudio packages source - https://rstudio.com/products/rstudio/download/ and download Ubuntu 18/Debian 10 variant from it using download link or programmatically:
cd ~/Downloads
wget https://download1.rstudio.org/desktop/bionic/amd64/rstudio-1.3.1073-amd64.deb
sudo apt-get install ./rstudio-1.3.1073-amd64.deb
