I don’t understand why my game is correct in game (Unity 2022.3 and Asset Lighting Box 2)
but blurry when compiled.
Check the quality settings for your project. It’s possible you have the “build” is set to a use lower tier than the “editor”.
Edit: I noticed the geometry is blurry in some places, not just the textures. Do you have some kind of Depth-o-Field post processing on?
I don’t think that’s what’s happening here. Look at the middle of the image and then at the outer edges. This is a depth of field problem, not a quality tier one.
Turn off depth of field in your post processing.
Hah, I was just editing my post at the same time, you were writing. 
But I can’t activate the depth of field? I would just like a little blur in the distance.
Because it works well in the editor
As its description states, please don’t use General Discussion for Unity support questions. Use the dedicated forums provided, depending on what specific subject you’re asking about.
I’ll move your post for you.
Sure, but if you turn it off and make another build, and your build doesn’t have the blur problem, then you’ll have isolated the cause of the problem.
Once you know for certain that it’s the DoF then you can start to troubleshoot.
Thanks