I watched the combinatorics video and learned how to study and improve postflop skill.
I just try it and I would like to hear your opinion.

Board: Ac9h4s
UTG 3bb open and BTN flat
UTG opening range: 22+,ATs+,A2s-A5s,KTs+,QTs+,JTs,T9s,98s,87s,76s,AJo+,KQo
BTN flat call vs UTG range: 66-QQ,AQs,AKo

UTG
Value c-bet: TT-JJ,44,AQs+,A4s,AQo+ 41 combos
Bluff c-bet: 77-88,KTs+,QTs+,JTs,KQo,8s7s,8c7c,7h6h,7s6s,7c6c,8h7h 54 combos
Check-call: QQ+,99,ATs-AJs,A5s,A2s-A3s,T9s,98s,AJo 48 combos
Check-fold: 55-66,22-33,7d6d,8d7d 26 combos

BTN
Vs C-bet
Call: 99-QQ,AQs,AKo 33 combos
Fold: 66-88 18 combos

Vs check
Value c-bet: AQs,AKo 12 combos
Bluff c-bet: 66-88 18 combos
Check: 99-QQ 21 combos

Please share your idea. TY