Horrible sleeper — HELP

Anyone else have a horrible sleeper? Like nothing that I do changes it and I’m getting so frustrated .

She’ll sleep amazing for a week, waking up only once. Then she’ll go a week and wake up 3x a night.

She will take great naps during the day, which should mean she should sleep well — nope, still up at night.

She will literally scream bloody murder until I feed her.

Absolutely no one night is like another so I never know what to expect. I don’t know what I could possibly do different. She’s almost 5 months old and everything I read says she should be able to go almost 10+ hours without eating.

ANY suggestions ?!?