Hello,
I just lost a game due to disconnection,
The strange thing is that on my clock, I had won by time, but the system did not give me victory, and I lost many points, my question is if it has happened to any player here in Lichess.
It happens many times. Most of the people here are prolly getting tired of replying because of how often it happens. The reason for this is because the server gets overworked of how many people have been playing recently, but fortunately there is a fix for this. While playing, occasionally reload your tab/app. Do this maybe every 30 seconds or 1 minute. Also reload your tab if your opponent hasn't moved for quite a while