Open your terminal in the download folder and run:
AppImages run in their own "bubble," so they won't conflict with other system libraries. krita deb download
Right-click the downloaded file and select "Open with Software Install" (or GDebi if installed). Click "Install" and enter your password. Open your terminal in the download folder and
Once you have downloaded the .deb file (for example, krita_5.3.1_amd64.deb ), you can install it using one of these methods: krita deb download
You can find specific .deb binaries for various architectures (like amd64) directly on the Debian Packages site .
Official repositories (especially on Debian Stable) may lag behind. The AppImage always provides the newest version.