Tanking issues

[Rbstr]

Your ilevel is really far behind compared to pretty much anyone, you simply don't do enough damage to keep up.

Your Axe, in particular is really far behind. It's only ilvl 70. If the people in your leviathan run have finished Heavensward they are getting level synced and are around ilvl130. (Or if it's an uncapped run they're potentially >100 ilvl above you)
You just need to upgrade gear. You should be able to pick some stuff up relatively easily.

They really should add ilvl sync to the post-50 story trials, like they have with dungeons.