How to stop random sims talking to you and invade your private property?

1) every single non-household sim considers their duty to invade into my lot and start walking around in my house. i locked the door for everyone but household members, but now nanny can't pass, so i had to unlock the door. i didn't join any club. one of sims is a 5 star celebrity.
2) sometimes my sim asks another on a date, and they go to the park / bar / beach / whatever. i want my sims to spend some time together, but everyone around is just trying to * me off. as i said, one of the sims is celebrity and fans and paparazzi start to hang around her. i can't just enjoy my couple having time together because these strangers are trying to talk to her and fall asleep in my sims' legs. i hate it so much! stop ruining my personal time and space!!!! even if sims are not famous, and they want to hang out in a bar, everyone will try to talk to them even if i don't want my sims to talk to anyone but their date. i mean, like, The Sims 4 is trying to be so inclusive and all social group-friendly, but EVERYONE IS STILL INVADING MY PRIVATE SPACE. you know, i play The Sims to escape from reality but even here i can't create my perfect life without people trying to annoy me.
how do i fix this all? are there any mods?