I'm just a novice. Played this game in CMX and drew, I would like to know if I (white) could have won from this position:
8/4k3/8/K1Rp4/3P4/2N5/3q4/8 w - - 0 1

Thanks for any analysis.

In my opinion, obviously White can't win in this position.
The white knight is pinned and the d4 pawn is unprotected. In the next move one of them will be captured.
Afterward it's a routine to trade the rook with the queen.
You can play this position against an engine and you see that black can get a draw very quickly. For example :

1. Kb6 Qxd4 2. Kc6 Qxc5+ 3. Kxc5 d4 4. Kxd4 1/2-1/2

Black can't win either. K and Q against K an R is difficult to win without a precise technique.
K and Q against K, R, and N is probably impossible in a great majority of cases.