Sleep training

How did you get your little one to nap in crib? My daughter will only nap in my arms or in her swing. My daughter wakes right up when I put her in crib for naps if she’s already asleep. And if not she just plays or cry’s...

Also having troubles getting her to self sooth at night , I try to put my 6 month old daughter down tired/drowsy but she just starts rolling around and playing... I usually end up rocking her to sleep.