Krita
Also on WindowsA painting and drawing app made for digital artists.
Installs from Ubuntu's own software archive.
Looking for Clip Studio Paint on Linux? Krita does the same job for free, and TuxPick installs it for you.
Install Krita with TuxPickIt works on Ubuntu 22.04 and 24.04, and on systems built on them like Zorin OS and Pop!_OS.