This is why you should never give up hope

In this game, I know I didn't play at my absolute best. The only reason I ended up winning was because my opponent clearly didn't know what he was doing. The endgame should have been a draw, but my opponent made many successive errors resulting in me regaining my queen and checkmating him. Observe.

You played the opening quite badly and you were lucky your opponent didn't capitalise on it.

6...g6 loses a pawn to dxe5.

17...f5 gets you into all sorts of trouble after Ba4

You managed to take control around move 20 and did a pretty good job until you blundered.

40..b5 was not a bad move probably not best but it didn't get you in any trouble

45..Kb4 was not a blunder at all in fact it was a very good move you just needed to follow it up with Ka3, the blunder was your 46th move.

You played a decent game and thanks to your opponent not knowing pawn endgames you got a win.

I disagree with your comment about 6. ...g6 because my e-pawn was defended both by d6 and c6, so the exchange would have come out even, though you're probably right I would have been in a worse position. I'll keep that in mind.

wow

There is nothing to disagree about that move loses a pawn:

Line 1:

dxe5 Nxe5 Nxe5 dxe5 Qxd8 Kxd8 and now either Bxh6 Bxh6 Bxf7(you just lost a pawn) or Bg5+ Ke8 Bf6 Rg8 Bxe5(again and this is even better then the last line)

Line 2:

dxe5 dxe5 Qxd8 ( if Kxd8 line posted above work just fine) Nxd8 Nxe5 (pawn lost)