HUSNG/turbo/1,5 USD - agree with this bluff?

Well you represent good Jx, any flopped two pair, straight or 55/66. Maybe some Ahxh though check-call with it would be more standard option. Most of that range should be eager to go for river shove.

River is better for him. He could have A5, A6, AJ, AA and Ahxh is more likely for him. AJ we would likely 3bet pre more often than call.

But yeah good bluff imo. We block 78, don't block flush draws and can have reasonable amount of value hands. Especially if we value shove river with QJ, KJ which is reasonable.

On flop check-call is fine also as then we have ton more value in hitting second pair. If we raise and hit second pair its bit of gray area do we want to go for check line or go for three barrel with blocking bit of two pairs and straights.

I am suprised that KJ, QJ are in my value range OTR. Also solver has shown it. Why? If river is better for him, shouldnt I just check with my Jx and call down?

Check is fine as well as KJ is very thin value. I said its better for villain but it's not like he should have huge amount of Ax either. Villain might try to bluff sometimes with busted flush draw but problem is that he will have often some showdown hand that will likely check back. Plus many might not try to bluff most busted fd anyway.