It took some time but i got the game back to its original form, installed Sndbox+ as first and only mod but it was still brocken. I managed to shoot if I hot right before crouching and kept fiering but it was whery glichy and I got stuch in crouch position when i moved.Time to manually remove all mods in the root and verify integrity on Steam to get you back to vanilla. Then install Sandbox+ first and test it. If everything is working correctly, slowly install other mods and test after each one until you find out what is actually breaking it.