Since you're on my realm I'd be happy to run stuff with you too, pressure free, if you catch me online (ign: Liam Harper)

I can definitely understand dungeon anxiety, having had that plenty myself. I've generally found low level dungeons quite relaxed, most of the time you can just wing it and any preparation you've put in your class is a good bonus. A quick browse over the dungeon tactics online is plenty if you want to be sure.

Other options are a nice FC (I'm part of an FC for players with anxiety which is great for pressure free instances), Discord (the Zodiark/Light discord is very nice with helping players through content), linkshells or simply putting your group in Party Finder and stating you have dungeon anxiety in the description. I've seen a few people do this and they were really friendly groups.

Good luck