It's nearly impossible to say how it would have ended at this level, but even if there had been a miraculous seki in the upper right, I would still favor W to win. But alas, W has more external liberties than B has total, making it easy for W to win the race and quite hard to lose it.

8: Hane
10: "Hane at the head of two stones"
14: The "elephant jump". Not connected, W gets a clean cut
31: Through 31 you've played 12 moves in the lower right, and while responding to them W has surrounding 50 points of territory. Did you have a plan for how your 12 moves were going to help you recoup 50 points, for a fair exchange?
40: "Hane at the head of two stones" - other moves are good too, but running away is not an option.
76: Why not connect?
78: G3 is the important point. You've committed to be cut and living independently, so now you need to seize as much of the bottom as you can for eye space.
116: N15 instead. Now your group is stronger, his is weaker, and K13 and M15 are still miai.
118: Contact moves are powerful! It looks like you don't really appreciate either how much pressure they put on an opponent, or what a threat they pose to you. You need to keep your groups connected if you want to continue this attack.
132: Connection is no good unless you expect to win the capturing race. Play R12 and see if he'll fight the ko. It's a long shot, but dead groups call for feints, no?

Whoever wins that semeai is going to be ahead by enough that you could call the game. If black wins it, because it's a handicap game, it's possible white might pull something off, but I wouldn't hold my breath. If white does, then white's already way ahead on the board.