At what age your babies fell asleep in their own bed?

I'm struggling so badly to put her to sleep 😞😞 she is 14 months and she hates going to sleep in her crib. She would just scream, so I have to constantly push back and forth her crib for at least 30-40 minutes until she falls asleep. it's so hard, emotionally and physically... I feel like I can't do this anymore... 😭😭 when she was a baby never had problems with falling asleep... but then I had to put her on a breastfeeding pillow and put in on my knees while swinging away, she used to love falling asleep like that, it was so easy, but then we decided it's time for her to fall asleep in her own bed and we are having so much trouble, like I wanna cry every time 😭😭