I managed to achieve a draw from a game that did not look good initially. However, I think I might have thrown away a win with some sloppy endgame technique.

I'm proud of the combination on move 22 where I managed to even out the material.

i believe you could have won had you been able to get your king into the game later but still well played by you.

I think 31 c6 would be good.  31... bc puts Black in a gloomy situation after 32 b6; meanwhile you seem to have strong threats with Qa5 or cb.  Black's passed pawns aren't as threatening as they might be due to the exposure of his king.

Still, what you played looks fine too.  I think he pretty much had to play 31... Nc6 hoping after 32 Qxc4 Rd8 to drum up something with the d pawn.  In the game you had 32 Qa7+ Kc8 33 Qa8+ Kd7 34 Qxb7+ when his passers should not prove to be a match for yours.

lol it's like your apologizing for the king's gambit