Based upon your response in #5, I'm guessing you are around 12- to 13-years-old now? 1700 at that age is a fairly strong rating.
As to how to break your current plateau, you will need someone to look at your games. Looking at your last one, for example, you forced trades when you had static weaknesses (your pawn structure was shot), which simply allows (in fact, encourages) your opponent to simplify into a winning endgame. Find a stronger player at a local club to go over some games you have already self-annotated and point out where you could have done better.
Based upon your response in #5, I'm guessing you are around 12- to 13-years-old now? 1700 at that age is a fairly strong rating.
As to how to break your current plateau, you will need someone to look at your games. Looking at your last one, for example, you forced trades when you had static weaknesses (your pawn structure was shot), which simply allows (in fact, encourages) your opponent to simplify into a winning endgame. Find a stronger player at a local club to go over some games you have already self-annotated and point out where you could have done better.