Arms warrior, help!

So I’m leveling my warrior, and I’m currently at level 118. I primarily utilize Fury, as I always seem to have rage, and there’s always something to do i.e. I have an ability active to me. I’ve noticed that my damage output isn’t as much as arms, but when I play arms… I seem to never have rage, and therefore nothing to use in terms of abilities. Could anyone provide insight into this? I want to become more adept at arms warrior-ing… but I can’t seem to to gain rage in order to be successful at it. Thank you in advance, and please, only helpful responses =)