I am guessing you are raising sets and A9 a decent % of the time either on the flop or on the turn so you might be higher up in your range to call twice with Q9 here so a call is standard with no specific read imo.

I will call the river being a "fish" lol.
As played ,don't like flat call q9 oop bb vs btn, fold or 3bet light is better.

"i think this is a easy fold because he dont will bet a worst hands for value" Yet you called, sounds like its based off this opponent only because imo its just an easy call.

There are a ton of combos of Ax you can have, Q9 is definitely a call. Not sure why you think bu shouldn't vbet AK here, I think it's a really clear vbet.

I'm calling this pretty quickly on the river. And I don't think a PF fold is good vs a button minraise.

call and don't really like it though, when guys 3barrels and use that sizing, it's more value than bluff.

hmmm i call if i don't have a special reads here:)