The guy thinks I cheated and probably will report me, what should I do to defend?

tr.lichess.org/gLLniiT5/white#41

In this 3 min game my opponent thought I was cheating eventhough I analysed the game afterwards and saw that I didnt play computer moves. Still, I played almost perfctly somehow. He said he cant analyse my lost games for some reason, and I dont know what that means or how to fix it. anyways, he is probably going to report now, since I didnt convince him. I dont want to get banned since I have over 1000 recorded games in my account. anything I can do?

if you haven't used an engine you have nothing to worry about

Nah, you didnt cheat here, that is obvious from your move times.

Nice refutation of this patzer setup. It is so bad but it is played so often here because it is non trivial to destroy it in blitz.