Forza not launching

Hi. So I'm in a bit of a pickle here.

I love to play Forza Horizon 4 and i have been playing it for a long time, but out of no where, the game just won't launch.
I have tried opening the game from the microsoft store, the xbox app and even my desktop.

When i start the game, a little window pops up, and then closes instantly. It's been going on for over a month now and i am getting tired of this.

I have googled solutions for this and i have tried almost everything.
I have uninstalled the game twice. Once on a different SSD and the second time on another HDD. No result.

I have tried reset, repairing and unistalling the xbox app. No result.

I have tried updating windows many times. No result.

I have made sure my GPUs drivers are up to date. No result.
I have even tried, downloading a program to look through everything i have on my pc to make sure there aren't any damaged files or drivers. No result

I would like to be able to play my game, that i have been playing for over 300 hours, but now i can't. For some random reason, and apperently there's a lot of people with this issue, but no F'ING FIX!

Anyone got any ideas before i just stop buying games for microsoft?

Btw, it's not only forza horizon 4, there's more games that does the same thing. (Opens a window and closes instantly) But i don't really care about the other games, i just want to play forza!

:)