Help!! Chick found on back and couldn’t get back up!

She’s a month old today, and I found her just here a few minutes ago in the brooder on her back and couldn’t get back up. I picked her up and put her on her feet and she kinda hobbled around for a minute. I brought her inside and put her in a temporary box in my kitchen while I figure out what to do. She was initially sitting down with her legs kinda in a splits, like you can see in the picture. I’ve tried giving her egg yolk, she’s not really interested, and is just walking around the box, but kinda unsteady. She’s pecking on the ground and doing general chicken things but hasn’t ate the egg yolk. I also gave her an electrolyte probiotic water mix, but she hasn’t drank that either. She’s acting somewhat normal now, with me just having picked her up and putting her on her feet. I don’t know if they had maybe scratched the bedding out from under her feet and she slipped and couldn’t get back up or what?