Hey henrikrh-

I probably would have folded A8o preflop. If it had been folded to you I would try the raise for a blind steal attempt but otherwise I think A8o is too weak here unless you have reads that tell you otherwise.

As played I would have just called the flop bet. I don't think you can protect your weak middle pair against villian here and either way any advantage we have will change drastically with the turn (up or down).

That being said, I like the raise when you hit trip 8's on the turn.

Edit after river play was added by the OP:

On the river I think you were too aggro. I would probably check behind or at the most bet/call.