Steam refuses to open

So i’ve installed Kubuntu a few days ago and installed steam. Worked fine, I changed some settings like Proton, downloaded some games and everything worked. Then I restarted my PC and suddenly Steam refused to open (like in the video, it just opens and closes again and again). I tried to remove steam and reinstalled it from different places like apt or the Snap version of steam instead of the installer, didn’t help. I had the same issue on Linux Mint a few months ago, but I can’t remember how I fixed that or if the problem got away by itself. Because its a freshly new installed OS I assume that’s a common bug so is there any solution to this? Thanks for your help guys