Have you gotten your new-style legendary items yet? If not, those will give you a boost. There's many threads about it, or you can Google it, I won't repeat it all in case you've done that already.

Check your traits, virtues, etc to see if they've been reset or unequipped somehow.

If you have some high level friends, I would try running the Harrowing and Shadow Roost 3 man instances from Minas Morgul at level 121. They are easy and drop decent gear quite often. Your friends can even pass you the gear they get (assuming they don't need it) to make gearing up faster. If you can't do that, try following the epic line and Black Book of Mordor, you should get some gear from those.