I don't like the raise because you kind of have a bluff catcher and by raising we really don't get too much worse to call than draws. These draws could shove on us too and we fold the best hand.

Calling is much better than raising, we are actually over repping our hand with the turn raise.

I like the check back on the flop, we've got a weak hand that doesn't really want to build a pot.

The turn is where the hand really falls down. For the same reason as on the flop you've got a weak hand so don't really want to be building a pot. "Raising to charge draws" is absolutely no excuse at all. There's a draw on the flop and you don't charge there. As played i would have just called the turn and called a river given it was a blank card

You have so many combos you could bluff raise the turn with , you don't need to be doing it with A2o. A2o has some decent showdown value, unlike a lot of the hands you could otherwise raise with.

I prefer a c bet here having position when there's so many draws. My standard would be to just bet flop and turn, checking behind on the river, in an ideal world.

I think the danger of getting raised is outweighed by the threat of giving free cards to a player expected to have a lot of combos hitting that board.

As played I would just call on the turn as surely that was your plan when you checked the flop.