I always play with people that start in a beginner or intermediate mode and end in Kasparov-style. It is a kind of swindle that I don't like. I think it is because they start alone and when they are in disavantage they use a computer. Even in another platform I had this problem. I lost some game after being with the avantage of a rook, and the other player started to play in a stockfish style, a move in a second. I reported some of them.
Always black

For Rapid you were white 9 games and black 11
For Blitz you were white 107 games and black 105
Regarding your other point, discussions of cheating or potential cheating are not allowed in the general forums. If you would like to discuss, join the following club
https://www.chess.com/club/cheating-forum
https://www.chess.com/article/view/online-chess-cheating
I have many problems with the platform. I always plays with everykind of cheater, and moreover I'm almost always with black. Can I choose tobplay with white? Normally I have to play 66% with black and 33% with white.