Playing 3/6 and got akos on sb. Co raise 4xbb to 24.I 3bet to 72. Flop come 3T8r. I bet 52. Co raise to 150.
How??

Hand 2
I got 99 stack 768 on the sb and raise to 18 on a 3/6.. utg+1 stack 3229 and mp called. Flop come 3 2 7r. I bet 44 into 66, utg+1 raise to 170, mp fold, i raise to 270, and utg1 call. Turn come a 7, here i know he cannot have a 7 there, and i jam all in 400+..... i expect an overpair to fold with my play.

Please advice how could i do better? Or can this be avoided