Your opponents can't impact your connection as the clients never directly communicate.
You can check out the following to minimize connection issues.
https://support.chess.com/article/4720-online-chess-performance-optimizations
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
Unfortunate Experience on Chess.com - A Security Concern
I am so nervous because of this. During a 5-minute blitz game, I found myself in a highly advantageous position. With over 2 minutes on my clock, my opponent (the alleged cheater) had a mere 9 seconds remaining in a clearly losing position. However, my experience took an unexpected turn when I discovered that I couldn't open the game page, resulting in a sudden loss of connection.
While some might argue that my opponent was merely fortunate, this is unequivocally untrue. My internet connection was consistently stable, and I even switched to an alternative network in an attempt to resolve the issue. Interestingly, the connection was promptly restored the moment the system registered me as "having left the game."
This incident is unprecedented for me, as I have never encountered such problems before. I consistently maintain a stable connection and always have an alternative network readily available.
Here is the game:
https://www.chess.com/game/live/94480975789