I need tips to beat them, it’s too hard
Isolate one of them, preferably the thinner one and get 2 hits and roll back, repeat until he is dead, if the other hasn't already gotten to second phase then focus on him until other respawns, and when he does the rolly thingy just hide behind pillars. Abuse the pillars. I don't know current broken weapons, but back in the day the ice axe skill and RoB would melt them, still the moon greatsword and blasphemous blade should cheese them