Anyone struggle with their 4-year-old at bedtime?

Does anyone else struggle with their 4 year old and bed time? We stick to the same routine, nothing changes. And he still will not fall asleep, it’s almost like he can’t shut his brain off. We have tried melatonin but it just makes him wake up during the night and ultimately I just end up in bed with him and it’s now becoming a problemAll reactions:

We lay down with our children until they go to sleep… then we roll out literally. My kids can’t go to sleep until less somebody’s puts them to sleep and “falls” to sleep w them.

Why is it a problem about laying there?