You could be 'paying' more than once for that smart tech:
https://www.express.co.uk/news/world/1810038/smart-device-technology-information-meta/amp
I have a Google account. That's enough for 'them' to know everything about me.
That said, I like to mess with the YouTube algorithms by throwing in random searches, that'll teach them! ;D
https://inspector.engineering.nyu.edu/
I tried this.. it's interesting where these things talk home to..