My game works just fine in the editor, but does not work when I export it. The things that are not working are:

1. my player doesn't rotate, towards the mouse at all
2. most of my BoxCasts aren't working. There is one that does work, and that is the bullets, as in the will get destroyed apon touching a enemy

These are the things I have found, I don't know what is happening, and I need help.

I found the problem. One of my objects was tagged editor only, and I just learned that some tags do stuff.