I am currently playing in 1.19.2, and wraith are unbalanced, their spawn rate is very very high, and their awareness is also high, and since the "fire" one shot even in full diamond armor, they are a pain to deal with.
I think either lowering their spawn rate or making the fire more forgiving in term of damage would work.

You can use my datapack if you want:
Wraith weight from 60 to 20
Dungeons_Mobs-Wraith_Lower_Weight-Nycto.zip

Wraith weight from 60 to 20 + additional mob spawn reductions
Dungeons_Mobs-Adjusted_Mob_Spawns-Nycto.zip

Thanks, I hope this can be fixed in the mod too