What things could I have done better in this game?

[UnitedGo]

I messed up on killing some of his invasion groups, that much i know. Back to L&D books I guess. Maybe do some of Cho Chikuns Life and death encyclopedia.
The question I want to know the most though is could I have killed whites middle territory and should I have and how does one approach a 5-3 point? Because, I don't see it very often in amateur games or professional ones. Now that I think about it my opponent was probably experimenting with it. One more thing, can I get a estimated rank? This is not the first time someone said I'm stronger than my OGS rank.



DISCLAIMER: Later on in the game there is a point where my opponent misclicked and didn't capture a stone so I let him go back and get it. It didn't do much to the score anyways. So that is why the text may be a little weird around 274 to 276. Thank you.

[palapiku]

You can learn a lot more from the games you've lost, not the games where you completely crushed your opponent.

[UnitedGo]

You can learn a lot more from the games you've lost, not the games where you completely crushed your opponent.

Yeah, but this is the first game where such an occurrence happened and while it is true that you learn a lot more more the games that you lost, but you can also learn a lot from learning what you did right, when you don't know what it is exactly.