You're playing way too many hands for one thing. If you're playing full ring games then you should be seeing about half as many flops as you are now. You are also losing more than half of your showdowns. If you're losing more showdowns than you are winning then logically you aren't going to be making a whole lot of money. Seems like you are going to showdown with marginal hands. Generally speaking, you should be winning more hands without having to go to showdown. Perhaps this is an aggression issue?

These general statistics are a good place to start, but they aren't the best indicator of your play or the easiest thing to analyze since there are so many more variables. 700 hands isn't near enough to get a clear idea either.

Trying to understand and resolve weak points in your game can be difficult, but it's great that you're trying. I think at this point the best thing would be for you to post some hand histories of hands that gave you trouble. Myself and others would be more than willing to look at them and offer our advice. If you don't get the type of response you are looking for then feel free to message me and I'll try my best to help you out.

But most of all, don't get discouraged. When most people begin online play they start off losing. It just seems to be the natural progression for most. The fact that you have played 700+ hands and still have 80% of your initial bankroll is a positive sign. Just keep at it and the results will come.