The home feed is mostly generated based on topics and Groups you follow.
If you follow a user, you will receive a notification once the person posts something in the community.
Therefore, the main feed is not generated based on the people you follow, but it is generated based on the topics and the groups you follow.
Also, in the Groups feature, you are able to separate your contents and users based on their interests. People could join to the groups they are interested in and can connect to others with the same interest.
To efficiently use the main feed in basic version, you can pick a name for different content types31 on your community and then people are able to filter the content on the main feed based on the content type.