1) Your main problem seems that you play slack moves because you are afraid to die.
is not needed, you are already pretty safe, and it's gote. Even if you are not confident in your reading, playing at P2 would have been better as it threatens to reduce the corner.Move 108: are you afraid of losing H5? There are bigger moves at this stage, like L17. Even P2 is bigger.
Move 124: why not extend at N13?
2) Corners are big.
doesn't achieve much. Better protect the lower left corner at C3 or make a corner enclosure at C14.3)
is a 1pt gote move (Black didn't need to protect at H9).Moves 136 and 144 are small and gote.
4) You missed the tsumego at move 170. You get a ko with B18.
5) You spent 5.6 seconds per move on average. You could take more time to read/look at the whole board/try alternative moves.
should be at q14, a the extension is only a good alternative if you can extend once more after the black hane
should be at f10