You played Qf5 in this position. It mean you need some improvement in "positional understanding"
1. You have powerful centre , "f" semi open file, with space advantage. You are not supposed to exchange Queens. As a general rule, the player with "space advantage or king side attcking must save pieces as much as possible"
In USCF I’m stuck at 1200-1400. I practice 30min or more everyday (unless special occasion), and I’m still at 1200-1400. I even take lessons with a GM every Friday and Tuesday. How am I supposed to get higher by this rate?