Question about your privacy policy

Hello dear team ,
I took the trouble to see what your browser does in the background.
Please explain THANK YOU.

no-thanks.invalid
laptop-updates.brave.com
sync-v2.brave.com
go-updater.brave.com
and there is much more of it

The above mentioned links will be called up at every start, please explain, as they advertise that there is no such thing at your site THANK YOU

Greats
baufritz