stuck at 700:)

ChessBoy513

You should play rapid, learn some tactics, strategy and mating patterns. Also a bit of endgame lessons(opening theory doesn't matter much at 700) and if you want fast games, no more than 10 minutes.

DevilishApples123

I can offer really cheap chess lessons to help you if you want, I know what it is like to be at that moment.

Terminator-T800

If your stuck at 700 I say work on concentration because this game needs a lot of it