How to monitor select program's folder for changes to revert if something breaks ?

Example

sometimes foobar2000 randomly changes some settings and things break, I don't want to create duplicates (to save space) instead I want to track changes in it.
Same for chromium.

I say select because I don't want the imaging solution

Could you perhaps solve it by making specific config files read-only?

You could use something like Kopia and only include the files you want

A program makes changes i many places like the profile folder, app data, registry and for linux and macOS it's different story

It seems like you're referring to dotfiles. You can manage these using a git bare repo.

example in windows chromium browser corrupts it self, and I have a image of the disk or I "only track changes for the program", so I can restore it