Why did my opponent resign?

I was playing against my opponent when I just attacked my opponent's queen but then he just resigned.

Someone explain pls

There are three main options:

• The opponent no longer wished to continue the game
• The opponent wished to leave the game for external purposes (I. E. going to work)
• The opponent wished to leave the game for internal purposes (I. E. mouse not working properly or lag)

4 pawns down, less activity, less king safety, white is more or less lost. Engine says -7.

No one can "explain" why your opponent resigned. We can only offer opinions. White has a terrible position! He is 4(!) pawns down. his Queen is under attack and has few attractive squares, and Black has a tremendous initiative. Stockfish evaluates the position at (-6.10). Even though there is currently no forced mate. White has plenty of good reasons to want to quit.

Down in material. No pawn structure. Exposed King. Probably thought "why bother?"

I think your opponent may have thought they were in a what I call “queen checkmate” (self-explanatory) but I have just analyzed it and they actually have two safe squares for the queen.

It looks bad for white

Why not just defend with Qd1 tho

U can block 2nd rank with Ne2 later too

Or maybe 23. Qb1

Just realised black can sac knight by capturing pawn and u get mate or lose rook i think and u start to lose