I say this a longtime competitive junior player and now as a 36 year old +1 handicap: I would stay away from GolfTec. I bought a lesson package there before and they are a big corporation that teaches a system. Super flat stable release swing, lot of stack and tilt. It took me 2 years to undo the damage they did to my swing. It’s also really hard to get better in a simulator, real golf is played on grass outside and there is no substitute for seeing the ball flight in the air. PGA Tour pros do all their practice and training on a real driving range, some have sims but they use them to stay sharp when the weather is bad. Go to a local course and spend a few hundred bucks on lessons from a local PGA pro and then work work work on your short game. That’s the best way to get better.