Privating & Deleting videos

Is there a way to private and delete multiple videos at once?

I’ve had TikTok since it was Musically and some of my old videos are cringe, and also a small amount has my kids in them. I want to private the videos that have my kids (so I can keep the memory) but keep them off the internet from here on out as my account grows, and I also want to delete a good amount of old videos.

However, since my account is old there’s a LOT of videos, is there a way I can avoid having to do it one by one?