Co has vpip/pfr of 26/18 in 62 hands. Hasn't ever open limped also and so we can assume he is a tag.

I think here he can have JJ-99 and some 9s like A9s for example. For stuff like AA-QQ, I think we don't see those often here because most likely they are being 4bet preflop. I would expect him to have fds here as well. Stuff like AhQh, AhJh, AhTh, KhQh, KhJh, KhTh, QhJh, QhTh, JhTh etc. He calls sometimes these fds while other times he is raising them. This is my assumption. Btw I think AKs is being 4bet preflop most likely.

Here I think he checks any 9 he raised on the flop. He continues with JJ-99 and also with fds.

Now here, I think maybe we should consider folding. He doesn't have often trips here since he checks 9s on turn. He checks also JJ here since the 9 hits on the river. Regarding 3barreling his missed fds, I think we shouldn't expect that to happen often enough in the micro stakes. People don't bluff often enough here. What do you think? Should I have folded?