NL25 zoom QJo

Vs unknown is a bit tough.
I'm not a fan of monochrome boards.

A flop bet is mandatory in my opinion anyway.
You've got to protect against many things and you also got a J high FD.
BU vs CO is a very wide range in general so I wouldn't worry too much unless a raise comes (against which I'd fold no matter where).

Without info on villain I wouldn't check/call because you remain in the dark, give xem initiative (and xe already has position), and just put yourself in a lot of trouble anyway.

With check/raise I think you'd just isolate yourself against better hands.

The only two options left are check/fold and bet/fold.
Check/folding turn is too weak IMO so I'd bet.

On the river I'd evaluate the card and either bet/fold or check/fold.

In any case I'd bet no more than 1/2 every street, to give myself some room to fold easily.

Hi lucky

Preflop: looks fine

Postflop: I think that betting turn here vs unknown is most likely the best play. We often still have the best hand and can get called by worse. I'd be no more than 2/3 pot.