Join the club. I'm Tiger Woods on the range and look like an idiot on the course.
I agree with the suggestions above. Turn the range into a course and be honest with yourself. Would that ball you just 'pured' down the range really have made the fairway or did you quietly pull that ball a little too far to the left and would that have been disastrous on Hole #5 on your regular course?
That PW shot you just hit straight at the marker, was that not two yards short and would it not have plugged itself in that greenside bunker on Hole #7?
I switched to just hitting balls to hitting specific targets and I switch clubs and targets constantly. My range has three little hills at ~140-150y that I try to hit. Take an 8I and hit the front, take a 7I and hit the flag, take a 6I and hit it over.
Then I play the mental course game. Imagine your regular course and start playing it. Hit a driver. If it's good I get to hit whatever I would hit on the course from the fairway from that distance. If it's pushed or something I penalize myself with a low iron and I need to hit within 10y of my regular target to be able to save the hole. My goal is to hit 'virtual par' over 18 holes.
All this has helped my game tremendously. Last week, for the first time, I felt confident on the course the ball would go where I wanted it to go. I could hit a green from 160y out, which I had never been able to do before.
Also, range balls have notoriously low spin compared to a course ball. A draw on the range will be amplified to a hook on the course. I used to play a nice fade on the range with Top-Flite's, but give me an NXT tour and it would sail into the woods on the course.
Good luck