How do you keep Arle from dying?

She's C0 with deathmatch R5... I can't seem to keep her afloat. I'm trying with Diona and was building Layla until I just got Citlali. I'm trying to use her with Bennett, (shielder) and xilonen, she just keeps dying with no way to heal her.

tried to get zhongli, but lost my 50/50. :(

and yes I know I can try for some better artifacts but that shouldn't be the switch between her being a short lived DPS and someone useful at triple crown, no?

am I using her wrong? (e, go through team so debt is due, hard attack and continue)

she seems to take so long to use her e for more life debt...