Since I’m a beginner, I can easily imagine making unacceptable mistakes. I regret that.
My question is whether it’s possible to learn from those mistakes, for example, by providing feedback on what went wrong, so I can continue making progress and maintain my Infiniteflight subscription.
It’s completely impossible to contact ATC. There’s no activity from other aircraft. I can only visit all airports without seeing any activity from others.
You mean you just got a violation from ATC and is now banned from using the Expert Server (ES) for 7 days… perhaps?
…and so now you’re either in TS (Training Server) or CS (Casual Server) where ATC activity is low or none, or maybe you accidentally switched to Solo mode (Non-multiplayer) where it is very quiet?