um taking his knight on move 26 would be a start
End Game Dilemma

black blunders with 41...Kc4. Instead he should hv gobbled up all you kingside pawns and he'll queen up first. Which would hv created complications.
So going back, the move u should hv played was Ke4 and he cant keep you out from the g6 square. And it's an easy from there.

"It is not my cup of tea"
I know many people who say they're bad at the endgame... years ago. They are still bad at it. Take the hint and buy FCE or BCE. In Basic Chess Endings some of my favorites were Grob-Fine (pawn endgame, with pawns at h3 and g4! Not hard to figure out what opening was played in that game lol!), that endgame where Botvinnik had a knight and there was a really long pawn chain and he eventually had to sac the knight after winning black's passed pawns and elbowing out the king, Morphy-Revierre (rook endgame) and Morphy-Anderssen (queen endgame) both of which Morphy lost, were really fun to study. Anderssen had amazing technical accuracy when it came to queen and two pawns vs. queen and could have easily allowed Morphy to draw at any moment but didn't ("Perpetual check always looms in queen endgames")
ENDGAME
I generally stay confused about the selection of Moves in the Endgame. It is not clearly my cup of Tea.. But in this game i made many mistake(may be blunder) in the endgame,While the middle game was perfect from me(at least from my point of view).
Now i want to know from any expert In this game from where i started to loose my position and which should be the perfect move?
It was a 30 min Live Standard game so i had time to think
Though i have won the game ,but still not satisfied with it..
thanks