In the new WhatsApp update, goodbye to random groups!

WhatsApp has added a new option that allows users to select specific contacts who can add you to groups, after the application was subjected to a lot of criticism because most groups are considered a source of nuisance.
To access the new feature: Enter Settings
Account 
Privacy
Groups
You will find the options “Everyone”, “My Contacts”, and the new option “My Contacts except...”
Click on the option (My contacts except..) and choose the contacts that are able to add you to groups.