Macbook boots up fine in safe mode, but freezes immediatelly when in normal mode
Somehow randomly over night, my Macbook 2014 Pro stopped working properly. When I opened it, the screen was black and then it lit up, but after few seconds it froze. But only the screen froze. When I tried to press the buttons, I heard Siri etc. So I restarted it and went to safe mode by holding shift during booting. There everything runs normally except its slow, but that's obvious. I can't identify the problem and how to solve it.
I tried to use first aid in disc utility. I tried to reset PRAM and NVRAM, I tried to delete some files in "folders" folder, where one was called 1A and the other was ZZ. I tried to update the OS from Mojave to Catalina. Nothing worked.
I'm desperate. I would like to fix it. This happened to me once, but I somehow fixed it by reinstalling the OS, but I dont want it to come to that. There must be another solution. Please help.
MacBook Pro 13″, macOS 10.15