Can not start

[Gennao]

No, you have not.
According to your log, your game is at version 1.8.1, but current version is 1.12.
Check your Steam settings (beta channel ?) to have it updated to current version.

Clean up your mod folder!
You have many invalid mod names in there.
Make sure to only have zip files in mod folder. if you have extracted mods for whatever reason, they need to be in their own folders with proper folder structure.

One mod also throws an error:
FS22_JohnDeere_8R_M1kkel_Edit

I updated the game, reinstalled the steam client and checked the version. Its at 1.12 now. But the game still doesnt start and will nkg create a log file in the folder.

Strange that it is happening across both games. Can you try rename your mod folder? Anything will do such as Modsa or anything other than Mods.
Try run the game and if that doesn't work, delete game.xml and gamesettings.xml and try again

Still does not work. I could only find the gamesettingstemplate.xml. I also deleted all the mods from the folders so that cant be an issue anymore

[Angler1409]

Have you tried deleting the shader_cache as that can stop the game loading if corrupted.

[Gennao]

Have you tried deleting the shader_cache as that can stop the game loading if corrupted.

I deleted the folder and it still does not work