Opening moves

You are rated 216. Do not worry about openings. You do not win or lose because of the opening, but because of tactical mistakes. Blunder check before you move.
Simplest and best is to defend 1 e4 e5 and 1 d4 d5 as black and to open 1 e4 as white.
Lasker formulated 4 opening principles:
- Only play your d- and e-pawns
- Play your knights before you play your bishops.
- Do not play the same piece twice.
- Do not pin opponent's king's knight with your queen's bishop before your opponent has castled O-O.