Hi

Couple of things to try. Sims are usually by default set up with no wind, perfect trim, and unfailing mechanics and electrics none of which are real-world. I don't know what sim you have, but in RealFlight you can do things to increase the "real world" experience like:

1) Increase the difficulty level from Beginner to Intermediate or Advanced;

2) Introduce some random flight failures such as engine kill, servo failure, etc;

3) Set the trims all out of whack and trim it in flight;

4) Introduce some wind, change wind direction, gusting, ground turbulence, etc.

These are some things that will more closely mimic real world conditions. Try to adjust the parameters to conditions in your area and practice with that. If you can do that and land correctly and consistently, you'll be closer to trying the real thing with success. But as always, highly recommend a qualified instructor for your first sessions.

Regards
Michael