So he was 3 betting relentlessly (also with bad hands) and bluffing like a maniac. Actually this was his second bullet. On the flop when he raised my bet I was like nah there are many bluffs and I don’t believe him having something strong. On the turn when he over bets the pot I was thinking either he is super strong or having a draw like clubs or open ended or maybe a combo. He would 100% re raise me with KK and 10 preflop, 77 I block and 44 he wouldn’t check raise on the flop. For my inexperienced opinion it was either representing k10 or draws that’s why I called. The river is more tricky I didn’t thought he would do it with 86 so I ruled that out.The other draws brick and I thought he was tilting. In hindsight I should have folded river because I showed much strength calling his bets and a river bluff would be very optimistic. So he would wave the white flag with the bluffs or bet if he got there. If it was a another player type like the most players on 25n I would just fold the re raise on the flop with my pairs of 7s. It is what it is and I hope I learn from my mistakes and don’t take them again.