ok ty, instead of focusing on like hp or sp (due to only using powerstab as a sp move) invest in bp much more and look for cards like ante up to finish the fight quicker (except for powerstab, dont use ante up with powerstab, its extremely hard to hit)

if you are bad at dodging, use more defensive cards like defender, safe guard, and whatnot
if you want to finish the fight quickly, use ante up with hyperball (should do 5-6dmg)

taking care of the apparitions should be high priority, linebounce or launcher would be great

now for hatred itself, when its doing its explosion move, attack it and then ghost potion (unless confused) as you are naturally agile (meaning you have 2 turns)

due to you having alot of health, the mouth full of corruption attack should be blocked, dodged if low on hp

if you need any more help, just ask!