Facebook has a feature that allows you to limit past posts, quickly protecting all of your posts on a Facebook account that’s currently open to the public, in just one click. Facebook operates on the friend-request model, which means that prospective friends must receive your approval one by one (unlike Twitter followers) before entering your neighborhood of Facebook. Twitter is a great social network for public figures, but if you’re looking to make or keep relationships, it’s not the most suitable network for your needs.”]
Source: https://www.csoonline.com/article/2133422/the-best-social-networks-for-private-people.html