Need help.

For the SECOND TIME my game has completely broke. I press play, it loads, and immediately stops running the program. No application even opens. Last time this happened I tried reinstalling the game and running it as administrator and every little trick but nothing worked. I asked here and after months got an answer… from a CSGO issue. Same issue, same solution, involved me changing one files permission and renaming it to just add the word “old” to said file. I’ll attempt it again at some point but why does this keep happening?