I need help to find an opening that would help me gain some elo
you have lots of good options especially with 1.e4, with the sicilian, caro, french, and pirc. With 1.d4, you have the kings indian, the Dutch, d4, and if your rated 900 or lower the englund gambit.
Looks like you have fine results with the Petrov's Defense, so why not just stick to that. Most of your opponents play 1.e4 so don't bother learning how to counter 1.d4 etc.
Just prioritise to learn the Petrov's and use most of your time to improve in other aspects of the game eg. tactics and endgame.