Darkeater Midir... I just... Can't

Please help me Im always standing in front of his head and i can dodge his physical attacks, the one flying flame attack where you have to go just basically left but the laser one and that fire breath attack where he immediaetly does after a specific combo

I think this is my 13th death and i ever got to the second phase once without estus and a glimpse of hp

Just please help me i cant