[SH] KK

I might have bet the flop a bit bigger to get more value. Villain can have here many pocket pairs so you want to target those lower ones.

I like it as played.

Well played imo. Bet sizes look fine too.

I like the small river bet targeting 77-JJ. I would've played it the exact same way.

Well played on all streets, nh. You could consider betting a bit larger OTR since you might do the same with some bluffs (diamonds or A highs). But his overall range is pretty weak in general, so the smaller size probably works.

I like the river size also. The bet otr seems necesserary for me against smaller pp-s and AQs

This is indeed well played. Many players get it wrong and bet , say, 75% flop, then 80-90% on the turn. That would be wrong even if there is now a 3f on the board. It would be building a big pot that we are unlikely to win instead of a reasonable pot that we are likely to win. Betting small on the river always comes with a warning tag (especially when deep), but that is a topic of its own.