This is something I'm very conscious of, especially when it comes to the big tech companies. I'm off of Apple, I have only free accounts with Google, but my one weakness would be with Meta. I was a longtime Facebook user for its messaging service, and now my partner is deep on Instagram. I use TikTok only to view and message, but have not given it creator permissions to use my mic or camera. Sorry China!
I rather like those adverts I get because they are listening in to me. At least they are getting me what I need (or want)...