This game freaking sucks. Not only is the tutorial severely lacking but the battles seem to go on for eternity. I had three of my ships firing on one enemy vessel and never did it once even budge the shields. I ended up losing the entire fleet. And that was on the "beginner" level. I don't know what to do. Looks like I wasted 10 bucks.
Sorry to say that, but maybe it's not the game that's lacking, but you? After all, this is not Freespace or any other stupid space shooter where you can kill a dreadnaught with just a few shots. This is a tactical fleet simulator where you maneuver and get yourself into position and use shield breakers and mass drivers and missiles and fighters to bring your enemy down piece by piece.
Looks like you'll have to either muster up the patience to learn the game mechanics - or return the game. There is no other way. But if you do return the game, you'll have to admit to yourself that you have actually failed where many have succeded.
Anyway, that was my 2 Eurocents.