Newborn sleeping trouble

Hey guys. I need to know I can do to help me 3 week old not wanna sleep with me.. okay so ever since she came home, she's wanted to be in my arms 24/7 and that's completely fine to me but she wants to sleep in my arms at night and every night I have let her... I know it's horrible to co sleep and I used to be 10000% against co sleeping.. but I'm very cautious while sleeping with her but she needs to learn how to sleep without me. I've tried swaddling and using a baby swing and rocker, etc. there's nothing that makes her stop screaming except when I hold her. It instantly stops. So mommas what can I do to help her sleep alone? I do not want anything bad to happen to her and that is why I don't want to sleep with her anymore so she doesn't accidentally suffocate or something.. thank you guys.