I’m dealing with the exact same!! My son has been having meltdowns at bedtime for over a month at this point. Age related maybe? I assumed we were hitting a sleep regression
Change their sleep environment into something more welcoming for sleep. Something like a new bedset or even a sleep like or sound machine could really help to get them excited. Toddlers can tell there’s so much to the world they don’t know and they’re trying to figure it out so going to bed will make them think they’re missing out on something
I’ve been dealing with this not necessarily bedtime but throughout the day constant tantrums, screaming and hitting.