Handful of things to point out:
Alm is dangerous with his native 3 move. If you’re relying on DuoCatria’s brave effect he’s going to outrun all his support so he won’t get that benefit.
No save unit means anyone who can strictly overpower your units will have 0 issues. Saves are a bitch since they force the attacker to target someone they don’t want to. Ideal placement would be a far save on the corner where Sothis currently is.
Dark mythics are there for two reasons. Reason one: LLC. Reason two… LLC. Use whoever is the focus for the week (priority 1), and then whoever you have highest Merged (priority 2.)
Slide the fort down one space. Where it’s at right now offers the attacker space to set up for a one turn sweep. Moving it down more denies the attacker another space, because the now empty space directly above it is suicidal to place a unit in.
Nanna isn’t serving much of a purpose, regardless of her weapon or kit. Swap her with a 2 range nuke, but of a different color than Volke. Your most obnoxious offenses to counter will have both a near and far save, and trying to kill both is a fool’s errand. Focus on killing either the near or far save.
Eldigan is fine, but since you’ll likely replace Nott, give him aerobatics so he can move closer to the Catria ball to offer a nuke an extra action.
And place the duo’s hindrance directly to the left of Volke. A vast majority of catapults will be in lane 6, so it’s not going to serve you very well. Put an aether pot in that top right corner instead since all VoH players are most concerned with getting all the lift they can.
So all told… Far save on the bottom left corner, focus mythic front and center, Volke fine, Catria fine, Eldigan give aerobatics, Nanna blue or green 2 range nuke (suggest flashing blade Luna OG ishtar or flashing blade deadeye Shamir), and replace Alm with… Hell… Make it a 3rd 2 range nuke.
Hopefully that’ll give you some better results.