I hit this when upgrading to Ubuntu 25.04 as that upgraded to Python 3.13. I'm running the various python projects I want in a venv. For the projects stuck on 3.12 I ended up building and installing it from source to my local directory (removing the unprefixed links for compatibility) as the ppa for Python ports doesn't (didn't?) support the latest Ubuntu.

I dislike using something like docker or conda as I don't want to install/use a separate distro just to be able to use a different version of Python. My setup is working well so far.