Congrats to your victory!
I think my doom started with 21. Reg1??. I had moved that rook to e1 before, not to let your knight escape to e3. In the next move I wanted to play 21. Rhg1 to attack the knight g4. Unfortunately (for me) I had touched the rook at e1 with the mouse without noticing it, and when I then clicked at g1, the wrong rook was moving there.
After your knight went to e3, I think youk had already a very comfortable position, and 22. ... Qf5! was a really good move (I had expected the knight to go to f5).