You can follow accounts, and they offer a Following tab to keep track of accounts you really like, but the default consumption mode is to use it just like TV. When you're done with a video you scroll to the next. The app uses signals like how long you spent on a video, whether you liked it or not, whether you sent it to friends or not, etc to see how much you like a video. You can also reset your "algorithm" if you find yourself consuming content you don't like.

Most people just scroll the home page yea. Of course you can follow accounts but that’s not the main use case. The algorithm really is mind bogglingly good

You can follow accounts, but you don't need to follow accounts. The UX is dead simple: scroll and watch content of interest to you. Tiktok handles the rest