You playing defiant on guild server?
I went back on my guild character and warfronts were a but better, ended up 4 win against 4 loss. It's all or nothing with defiant
best advice if you're losing a lot Tomb is to give it about 5mins between losing and joining another. There are lots of warfronts going concurrently and you will find you are running with and against a lot of the same peeps. When a team starts a losing streak it can last for ages! I generally take a short break and rejoin, most of the time end up with new people and a fighting chance!
My rogue is 16 on that server, going to start using a ranged spec soon though. People bunny hopping and moon walking through melée combat gets on my nerves

fight fair fool!