Little Snitch is quite powerful. A more affordable, and simpler alternative to Little Snitch is Radio Silence (https://radiosilenceapp.com/ https://radiosilence

Little Snitch is quite powerful. A more affordable, and simpler alternative to Little Snitch is Radio Silence (https://radiosilenceapp.com/ https://radiosilenceapp.com/) and TripMode (https://tripmode.ch/ https://tripmode.ch/).