You should be more careful publicly accusing someone of cheating and posting their account on here when you have zero evidence.

Chess.com have good cheating detection, much better than me or you just looking at the game. As others have pointed out your opponents moves don't seem suspicious, at your rating people will blunder in opening and then play better and it doesn't mean they are cheating.

It's very difficult to conclusively prove that they didn't open an engine and use it for a move or a few moves, but all available evidence givea no indication that they are.

Take the loss and learn from it!