The “For You” page on TikTok suggests new content to users based on the kind of items they have viewed and/or liked in the past. In short, it is almost like Instagram’s “Explore” page.
Here you will find a customized collection of videos that TikTok has curated to meet your interests and taste. While most of these videos will be from people whom you do not know, based on your past behavior on the app you should enjoy these videos.