https://support.chess.com/article/648-what-do-i-need-to-know-about-fair-play-on-chess-com
https://www.chess.com/article/view/online-chess-cheating
Discussions of cheating, potential cheating, or cheat detection are not allowed in the general forums. If you want to discuss, join the following club: https://www.chess.com/club/cheating-forum
How many times have you gotten a winning position from the Opening or early Middlegame, then all of a sudden your opponent can "do no wrong" and draws or even wins? How often do you suspect cheating not from the beginning, but as a desparation measure, when things go bad for your opponent?