An opening

Guys, tell me what you think about this opening as white: 1 e4 e5 2 g3 Nf6 3 Bg2 it allows white to play Ne2 and d3 without blocking the bishop, and the bishop itself is in a very strong position as a defense for the pawn and if you move the pawn forward he's also very strong for the offense on the long diagonal.

it is true that white doesn't pressure black in the begining, but black can't pressure white witout over-extending himself, as he's not developed enough to full-out attack white. white has time to develop.

nice move if black play e4 hes has a chance

Your opening seems to be a move order to reach something similar to a King's Indian Attack except you proposed putting the knight on e2 instead of f3.  Black would get an aggressive position from moves like ...Bc5 and ...Nc6.  White is not putting any pressure on black.