Sounds like routine server maintenance. Sucks when you're winning...
Draw without my agreement

https://www.chess.com/live/game/5465454023https://www.chess.com/live/game/5465454023
Link to my game where i lost points for drawing against weaker opponent

I was wrong. If it were server maintenance, then the game would have been aborted. My bad.
I was poking around your game though, trying to figure out what happened when this message popped up. Might have some bearing...
This connection was closed because you logged in on another browser or device.

I was completely winning after capturing their queen .Suddenly server of laggy chess.com disconnected when all other functions are working properly. The game drew by its own and showing draw by agreement at 4.50 am.
You might open a ticket with support and see if they can determine why the draw happened. Maybe your opponent offered the draw after dropping the queen and you accidentally accepted?
https://support.chess.com/collection/343-contact-us

I neither need to nor i want to indulge with tech support for mere 10 ratings points.
Nor i sent any draw offers or accepted them .
Just wanted to know the reason

I neither need to nor i want to indulge with tech support for mere 10 ratings points.
Nor i sent any draw offers or accepted them .
Just wanted to know the reason
If you're unwilling to contact support, you're unlikely to get an answer here. These are primarily read and answered by regular members.
I was completely winning after capturing their queen .Suddenly server of laggy chess.com disconnected when all other functions are working properly. The game drew by its own and showing draw by agreement at 4.50 am.