1 - you most certainly had the best hand here, he prob had some broadways that peeled b/c of the small flop cbet. Seems fine actually.
2- His range seems like 33-99 to me. Because its BvB I feel like people will be reluctant to fold here. I do like it on a spade river or Q,K,A, or 8.
3- yikes, fold everywhere!
4- I like the small sizings in general, but on boards with draws where you're also OOP, I think you should bet a bit bigger. There's not much money left behind, but this is the one hand I'd be really really happy just calling with instead, on turn.
5- Its fun to induce with hands you can shove over with
6- They c/f so much here.