I noticed you only have one "capital" ship. If you can get bigger ones, you will need them.
2 Victory Class Destroyers (in fact one) can easily remove your small Neb-B from the game, 4 broadsides bombarding your fighters is going to decimate them in no time.\
You need balence when you engage the enemy, too many fighters isnt good and likewise too many capitals isnt good either. Right now you dont have enough of the larger ships to damage deal and absorb damage. Get the highest class you can. (and dont get MC30s if you play FoC)