Alright. So you may be thinking that there couldn’t possibly be a singular best chess opening. There are numerous different openings that have their own strengths and weaknesses. Unfortunately for you, that is false.
Introducing, the Slime Opening
The maneuvers are easy to understand, start with pawn to a5, then follow up with pawn to a4, add in a surprise pawn to a3, and finally take white’s pawn on b2 with the pawn on a3
This will create a pawn fork between white’s bishop and rook whilst having the pawn be able to promote at the same time.