If you feel another member is using disallowed resources you should report them.
https://support.chess.com/en/articles/8562517-how-do-i-report-someone
https://support.chess.com/en/articles/8568369-what-do-i-need-to-know-about-fair-play-on-chess-com
That said, discussions about cheating, potential cheating, or cheat detection are not allowed in the general forums.
Just lost a game I feel it was kinda suspicous, opponent won wit 94% accuracy and his game before he won with 96%, both my game and the game before were more than 20 moves. I don't know Maybe I'm just bad but, i was confused cause he forked my king and knight and didn't even take the knight. Im 870 elo btw and my opponent was 900. Do you fellow readers have any opinions
do you think he cheated?