I believe a mistake I made quite a lot was not shooting enemies that were far from me.

I have changed this, and I have to say it kinda works, but the problem is that when they are far, I get blinded by the smoke of the gun, and the recoil starts going crazy.

How do I counter this without Aim Enhance?

Visor tag them 1st or use Visor Enhance.

No the issue is not seeing them, the issue is shooting at them. When they are far, I could empty a whole clip and only a few bullets land due to recoil.

Use laser or shoot them tapping the fire button repeatedly like single shot to avoid most of the recoil.

crouching reduce the spread of ur weapons the most assault rifles are made for near/mid distance u should testing the gauss attachment