Can I still win with a knight and a king?

Was there supposed to be a diagram?

At any rate, king and knight are generally not enough to force mate.

https://support.chess.com/article/663-advanced-editor-tools-help

no

king + knight vs. king is a draw because there isn't enough material, though i think king + knight vs. king + pawn can be won (but i am not sure so don't quote me)

unless they have a rook pawn or something it's theoretically impossible, even if they do have, it's practically impossible

There are often forced mates with N against a- and h-pawns, even orb. In general, USCF and chess.com have distorted rules compared to the rest of the world (FIDE).

Not in any case, #9. N versus Queen(s) is a draw. No mate possible.

Isn't N v Q a win for the K+Q?

Sure, if N times out. If Q times out draw.

Oh yes you are talking about timeout

I've actually seen the king & knight v. king & rook pawn with the latter king trapped in front of the pawn play out in a tournament.  It works out like this:

The knight can't win unless the pawn advances and the attacking king traps the defending king in front of it.  Using zugzwang to force the pawn forward, then the knight delivers mate.

I mean the FIDE rule is simply universal. Who is gonna decide? I made up this position quickly, mate in 16. Forced of course.

I play Kc2, and then bring the knight, disallow him from the a2 square, force him to play a2 then maneuver to c2 or b3

Or this:

only with pawn