Nappy nightmare

I’m having huge nightmares with nappies… Tried Tesco, Aldi, sayinsburys, kit and kin and of course pampers pampers size 3 and we settled now on pampers size 4 As any other brand gives her nappy rash Pampers are the only ones that don’t give her nappy rash, but every single nappy other brand as well as pampers leaks out the top even to protection one from poonamis 🤦🏻‍♀️ I’ve tried size down and up in every brand it’s getting everywhere everytime she poos Also I don’t put them mega tight but they’ve now started cutting into her skin ffs! I’m so annoyed as they’re the softest nappies in my opinion but the inner bit that stops the poo coming out has cut into her skin! I feel like I just don’t know what ones to try anymore