why is his bet on turn so big? : coz he has ntg left on river if u call anyways, so is comitted, obv. so standard
this is a clear example where abc play style creates a lot of incredibly difficult spots. there are some lines as alternatives:
1, 4bet his sqeeze and get it in is for sure +ev vs his range , if utg was very strong he mostly 4bets himself so we mostly have the best hand here and he can level himself into stacking off with worse pp for sure.
2, postflop: c/r flop is deffo better in your spot, coz there are many cards that ruin your hand and he still can stack off there with lower pps putting u on some oesd or fd , on turn you can either b small/c vs him or c/c as u did, this would in my eyes depend on his cb on turn. with a tell i can go for "weak" b small and even fold on turn line, but for this u should have your opponent well analysed.
conclusion: u surely didnt play this hand badly, but its highly questionable if u want to continue playing like this, coz u are not posing any problems for your oposion oop and u ll be getting valuetowned everytime. And thats why actually if i knew in your shoes he knows i play like u did /which i dont/ than i might be leaning towards actually b/f or even c/f coz in longterm vs thinking lag u re just playing inferiorly.
ofc if he s a berserk lag, your line is perfectly fine.