I am White

6: This is a decent move if you are one space higher ( IOW, one space further from the right side of the board ) at Q4 and P3.
But when you are low like this, black gets more out of his two-stone wall than you get out of your corner.
A solid, time-tested way of handling this is Q5. You then have miai of R2 and R7/R8

9: He should have played at L3 or L4.

20: A good direction, since you probably can't find eye space on the bottom, but there are more enterprising options like K7.
Tenuki to C6 is worth considering also, a strategy in which you prevent him from attacking your group by keeping his group under stress.
If you are really concerned about the life of this group, try G5.

22: Much better.

26: I don't know the joseki here, but that feels really small. I'd play H17 or J17.

28: Tewari analysis: after you played this stone, if your opponent allowed you to pick up your B18 stone and move it anyplace on the board, would you stll choose to leave it at B18?
If I had that option, I would move it to R14.
Set up a board with that position, then look at move 26 again.

42: You are attacking while leaving a weakness in your own group. Try P15 instead.

46: A good solid move. But P15 is better. See https://senseis.xmp.net/?Table

50: Make the connection at P18. If he does not defend his corner, you will kill it. So he has to defend, then you still can play Q10.

52-60: This whole sequence is risky, becaause you are inviting him to build strength around your J4 group, which is now starting to look weak.

62: Gote. But fortunately he doesn't see that.

64: If you must play gote moves for eye space, F2 is bigger. E5 or G5 looks better.

70: This is a one-point gote. You are thinking too small and too locally.
As alternatives, consider O5 or E12.

74: You are under attack. G5 or F4 is needed.

76: The right direction, but too small. E12 is better. ( There is lots of room to run if he tries to attack it )

88: Again, a small gote move. H6 is better.

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Local position at ( ignoring the rest for now ):

Click Here To Show Diagram Code

[go]$$Bm21
$$ ---------------------
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . X X O . . . . x .
$$ | . . . , O . . . . ,
$$ | . . X . . . . . . .
$$ | . . . ? ? . . . . .
$$ | . . . . . . . . . .
$$ | . . y . . . . . . .[/go]

This local shape seems rare in pro games...
- one database: only 5 games ( from 1903 through 1968 ) ;
- all 5 cases: an existing pincer at (x) ;
- 4 of the 5 cases: an existing extension in (y) direction ( down ) ;
- W's next local candidates include the grey area ;