help!!!

I can not get my toddler to sleep in her own bed consistently. We have tried everything. We have a consistent bed time routine. She gets drowsy and I lay her in her bed sometimes she goes right to sleep but probably 70% of the time she screams. I try to let her cry it out but she will literally cry for hours if i let her. Tonight she cried for 39 minutes straight until her little voice was so hoarse. I finally went and got her and she fell asleep in my arms but as soon as i lay her down she started screaming again. We have done this for three days in a row now and i’m so exhausted I can’t see straight. What do I do?!?!