I have discussed this game with my opponent and we've agreed about our mistakes and blunders.

The end of the game (from move 35) it's very good.

My question is: is there any opportunity for black to win the game from move 36? 

I would like to discuss the game with you before watching the computer analysis

At move 35 I think white is better. I think he spent too much time defending his pawns, but instead he could have forced promotion much faster by letting black have his k-side pawns while he did something like 37.Nf3, 38.Bf2+, 39. Rb5 and 40.Rb8. The passed a-pawn is the main feature in the position, but white was slow to use his advantage. The blockade can be lifted, especially with 2 minor pieces for the rook.

I do not really think black has a chance after he trades the rook for the pawn. His best bet though, I think, would be to advance his pawns together so they defend each other and their queening squares. White should still be able to stop the promotion though, even at the cost of a minor piece. 

It is an interesting ending though, and it is more than likely I am missing something.

I looked it overly quickly starting at move 36 and these were two things that stuck out for me.

Why didn't white simply play h3 at move 27. If black trade the rook for the bishop and knight I think he loses as the other rook is stuck defending and the black king is blocked out from defending his pawns with the king.

On 51. white could have just taken the pawn since you removed the only defender from it.

There were still simple mistakes from both sides after move 35. You said you were looking for an opportunity for black to win; at move 53 black should have played Rxe1 before promoting the pawn with check. This shouldn't be too  hard to win with queen and pawn vs bishop and knight

@FancyKnight: there were some stupid things I've did in this game but this was by far the greatest. Thanks for pointing out

@ChessSponge|: thanks for pointing out my mistake, should have bring the king instead

53. ... Rxe1 doesn't win the game. 

After 54. Kxe1 g1=Q+ white can play Nf1+ and get the queen.

I haven't saw that one, thanks

this took me forever to make, like 2 or 3 hours? i dunno, i had waay too much time on my hands. anyways, enjoy!

Both of you  played like trash

@tastendruecker

You're right, I didn't see that.

i don't see the final checkmate

What a tragic game!

Sorry, it should be:

What a tragic game??

I think you had several oppurtunities after move 36. like for example why didn't you take the pawn on move 51.?

After the mistake at move 26 black was never in a winning position while white missed many opportunities.

@_HuRRiiCaNe_: we're trying to do our best to improve. I've started chess 3 weeks ago.

@HankHill12345, thank you very much for your time, I have to study carefull your comments