I can’t remove my comments?

I haven’t touched TikTok in a very long time and I found comments I left when I was a kid and they are so cringe, but TikTok won’t let me remove them. I go to my activity center, select comment history, and when I select the comment it says video is unavailable and comment is unavailable. I really want to clear the cringey comments I left when I was a dumb kid, is there another way to do this?