I think someone is stalking me through Google's "Find Device" feature.

I recently moved out of the place I used to live in with my father because it wasn't a nice environment. I moved in to another place with mom and brother, and he said he doesn't want to see us again, changed his phone and blocked us 3. However, ever since yesterday, I keep getting notifications to my phone that say "This device has been tracked" or similar at random times, from Google's "Find Lost Device" feature.

Is there a way to disable this tracking function or log out of every account? I already disabled my location but it keeps happening, and having this option disabled at all times is very inconvenient for me.