fold pre especially because of the maniac whale behind you (how many hands?), and I would fold against the 3bet because I don't want this oop against a maniac.

Ideally, we want a hand strong enough to just sit there and let him spew range vs range postflop.

His call on the turn is amazing and I wouldnt bank on it again

Fold pre, too weak

I would never play this hand from MP just got distracted playing to many tables and talked myself into a call when he 3 bets with his stats only 20 hands i jammed turn semi bluffing cos i knew i bodged it pre

(For future reference it's good to include sample size with your preflop stats...74/43 could literally only be n=19 hands so you can't put too much weight into it, other than he's a fun player)

Fold pre instead of open was also my first thought.
Flop is good.
Turn...V is not folding an OP for a minraise on the turn (which is probably correct even though he can't spell GTO), so putting his OPs in a shitty spot is not part of the gameplan OTF.

As this hand plays out I think you are better off just XC XC XC vs this profile, river feels a little uncomfortable, but you're getting a good price. That was nice of him to match your last 40BB with Ahigh+5high FD but actually this SD illustrates even more why you don't want to XR turn. Plenty of fun players are capable of double barreling a junk hand like that but also capable to realize it's time to fold vs your line and only call you with TT+, QX, AXss/cc, KJss/cc, KTss/cc, so on average this semi-bluff would be shutting out villains bluffs and keeping in his best hands, losing yourself money. This is what timeslot meant by don't bank on it again.

Semi-bluff turn because you botched it pre is just compounding mistakes and punting. I'm not saying I've never done it before but it's just important for you to catch yourself doing this, give pause, and reevaluate each street as best as you can. Play less tables for sure. Maybe don't play zoom while you're learning? It will help you to be a thinking, winning player as you keep moving up the stakes!