Zoom SH Overpair

This will be a long answer, but I'll answer as good as i can.

Too bad you have no reads/stats on villain.
His range depends mostly on his playing style.

Let's assume he is a nit. You call preflop and make a donkbet.
What can nit think?
"He's called pre and donking on that dry board? No way my AT+, 22-66 is any good, ill fold."
OR
"He's called pre and donking on that dry board? My 77-JJ is probably good, but he may have trips, so i will x/c, maybe will bet small if he will play passively, but it's thin value."

But if he is a lag, aggrofish or tag that thinks about your cards, what will he think?
"Preflop call and donk on such a dry board? He can have pairs, he can miss everything and try to bluff me or flushdraw. I have fold equity here. RAISE!"

Then turn comes...
"Hmm, a call. Only draws and pocket pairs left (my A7+, 67+ are no good, i can win only by betting OR my 66+ have a thin value here). BET! I'll represent a big hand.

Then river....
"Hm, 10 came, no flushes. I'll try to bluff him off his hand, he should fold all pairs except sets and faces."

There is no "right" answer in this situation, because we don't know your opponent. He can be fish, he can be a good TAG, he can be NIT. That's why assigning ranges in this spot is hard. Need more reads.

I play FR zoom, but i think this applies to 6max too.

Will you explain the reason for the donk on flop. And please try to answer yourself what haschanged on the turn?

+1 nitrol.

You put yourself in an awkward position by donking the flop.

So I'd be looking to check/call flop, and reevaluate turn.

I wouldn't think too much about the river decision, because that's just the result of a random donk.

I think we need to 3b pre and probably xc the flop on this board.

As played fold river.

3 bet pre is a bit loose vs MP open range. It may be an option if we have info on villain.