Our baby girl used to be ok with bedtime and just this week decided she wanted to play longer or have us tuck her in multiple times. We stick with the Ferber method (I think it's called that). Come in day it's bed time give a kiss and walk out. Let her cry 1-2 min. Repeat. Cry 3-4 min. Repeat. Cry 5-7 min. Repeat. Eventually they should go down on their own. Currently we never have to go past the first repeat.
We also really try to stick with a routine to help her wind down. Play a certain music playlist before bed while she is playing in her room. We give lots of heads up. "Ok honey, it's going to be bedtime soon. Daddy is going to read 2 books to you while you play. When he's done with the second book it's time to clean up and go to bed." We found it really helped her to have a "countdown" so to speak rather than suddenly (in her mind) saying it was time to stop playing and sleep.
My kiddo has always laid in her crib for a bit before falling asleep. We have a star projector which helps us transition to bed well and keeps her pretty calm without us having to be in the room. She’s into stars so it was the reason my husband got it but they have some with animals and she finds it fun to sit and watch.