How does one beat infernal xander with an all melee flier team and without flyzura???

It better start with tanking the green cavalry mage and xander.
Sooo, a red flier like caeda.
Bring in cordelia to sweep.
Cherche
And the 4th would be up to you

The first turn would be the most crucial turn as you will most likely have to use this turn as a bait turn.

My only useable flier team is the following:
5-star subaki
5-star Cordelia
5-star Valter
4-star +10 brave axe death blow cherche.
This team has a horrible matchup against Xander's GHB, but I actually pulled off infernal:
Reposition Cherche so she kills the lance dude, reposition cordy out of range
Cherche gets hit with gravity, and xander starts charging towards the rest of the team
Cherche uses escape rout to teleport downwards. Valter and Subaki make a wall to prevent Xander and the sword dude from attacking cordelia and Cherche
Xander and the sword infantry attack valter and subaki, deal negligeable damage, healer teleports and heals Xander
Then, the next, ultimate turn (no joke, took me 20 tries to make it)
Subaki kills the sword infantry, activating atk smoke
Valter Kills Xander with Luna
Cordelia Kills the healer. Had to de-equip life and death and change to darting blow. With the heavy blade seal, she charges galeforce after her three hits
Cherche teleports with escape rout and slaughters the infantry green mage
Cordelia quads the horse mage and kills him with the fourth blow.

Utilizing movement skills is the key. What I have for my team was:
Hinoka: Guiding Spear Eff refine + Draw Back
Camilla: Reposition (didn't see any combat).
NY! Camilla: Swap
Myrrh: Swap

My red (NY! Camilla) has terrible res so I was not comfortable with the usual opening of baiting Xander and his cav buddy. My opening is to ferry Myrrh with movement skills to hit the lance infantry on the left, while keeping away from Panic Ploy and avoiding the horse guys. Hinoka's LaD was crucial in dropping Xander to below 80% so we can take him out with Specials. Her weapon's effect refine allowed me to 'work around' the Gravity of that annoying cleric.

Walkthrough: https://imgur.com/a/UjcxN

It's not as convenient as a dancer but it works. You should also explore how your team can utilize positioning skills for this map.

I also got problem on flier emblem team, since i only got 4*palla(neutral),5*caeda(-def+res), 5*tana(+ark-spd), 4*cherche(+atk-res), and 4*+10beruka(+atk-spd), with most of blue flier being fooder or subpar , 4*cordelia(-atk,+hp,why?) Ghb unit, oh i almost forgot about myrrh+def-res. And yes, other than michalis the other infernal ghb is unobtainable for my flier emblem, and im still waiting for good person on internet to give me some guidance