My 2 year old will not go to sleep

Kaitlin

My 2 year old gives me such a hard time when going to bed. I lay her down and she starts screaming. Her sister is 5 and would usually calm down if she snuggled with her but now she wont even stop crying unless I lay down with her and when I do that until she falls asleep, and leave to go lay in my bed, she wakes up an hour later screaming. And this goes on all night. I’m so tired. Please help.