That's generally how it goes. Your gear on the other hand is WAAAAAAAAY out of date. Your weapon, belt, necklace, and bracelet in particular should have been replaced ages ago. Go farm up some poetics and buy some ilvl 120 gear in Mor Dhona and upgrade it to ilvl 130. The weapon will require that you purchase 7 Rowena's Tokens (Poetics) and an encrypted tomestone, then turn them in at the vendor next to her. To upgrade, purchase a carbontwine for all the left side pieces and a carboncoat for all the right side pieces (These can be purchased from the tomestone vendor). Then go to Drake in Hyrstmill in North Shroud to upgrade them.

You don't really need to do this for everything, your main armor, rings, and your earring are fine. Heck, if you skipped over some of your heavensward sidequests, you likely missed ones that'll give you the weapon and accessories you need to stay up to date, if you'd rather do that over farming poetics (And you should do that going forward, unless you want to buy gear every now and then, even the poetics gear won't last you until 60.) In particular, I will note that your weapon is by far your most important piece of gear, and having that out of date may be a big reason why you struggle on mobs.

Oh, and if you're doing solo content, make sure to try pulling out Titan and using Egi Assault: That's a shield for 20% of your max HP. Especially when you've upgraded your gear that'll add a fair amount of survivability.