Lonzo flipped over a few times over a year ago & that's when he lost his lung function, his right lung doesn't work. We're still not sure why he flipped over and he's not doing it anymore. I took everything that's higher than 2" out of his tank and he's mostly on blankets. He's been to the vet 3x for checkups since the beginning of the year, but for him, a lot of it is age, he's over 10 now and slowly slowing down.
As for Ava, I can see her strange walk but have no ideas about geckos. I know someone who runs a gecko sanctuary, so I can ask her to check out the video and give you some advice. I wish I could tell you more, but I've never had a leo, only dragons & my two geckos, that aren't the same as your leos. I'll see what Lauren has to say, but I think going to the vet is a good idea. Do they know anything about leos? You should find out, because otherwise it's a waste of money, right? She doesn't seem distressed and she's eating well and pooping. I'm also not sure about how an overrun of parasites affects Leos. So check with the emergency vet before you go in there. You need someone who really knows about leos and how they function.