New opening?

I'm playing black, can someone help me develop this opening?

f5 kinda puts u in a bad spot, engine says whites winning, nearly +2, and unlike alien gambit which draws out the enemy king in exchange for losing material, f5 directly loses the pawn, the center, and weakens your king in exchange for basically nothing. Srry but kind of looks like a cooked opening if Nxe5, if dxe5, just take the pawn with the knight and u will be up +0.3

What if white takes on f5? Then the whole opening falls apart