How can I avoid stalemate?

I keep stalemating and its annoying, how could I have checkmated him? And what are some studies I can study to avoid stalemates or something to keep in mind

https://www.chess.com/game/137848756532

Always check the spaces that the opponent's king can and can't move and make sure he always has at least one square where he can move.

Check the spaces king can and can't move

Well, in this particular game you could have checkmated him by playing

55. Qb1# instead of 55. Qd1. There were also mates possible earlier on, 43. Re5# and 45. Qe7# could be done.
One way to avoid stalemate in games where you have a lot of pieces where the opponent can only move the king is to always make moves that give a check even if it means losing material. The stalemate risk is too high if you have a lot of pieces against a lonely king, so give checks.

I am not sure that you know what stalemate is. You should look it up. It's extremely difficult to avoid stalemate if you don't know what it is.

If you know what stalemate is, you still need to use your head and try to checkmate instead of stalemating. Playing random moves without thinking is not a good idea.

Look at that game again. Your opponent blundered his last piece, the queen on move 40. At this point you were ahead a queen and 2 rooks and had more than one and a half minutes to figure out how to checkmate. Your first golden opportunity was move 42 where you had at least 4 different ways to checkmate in 1. Instead, you made a random move without thinking. This continued for 12 more moves, you played random moves and you kept getting away with them, until you suddenly weren't getting away with the last one.

Don't play random moves. Use your time and think.

this must be the most positive forum ever created about stalemate.