Discovery in networks is always a bit difficult. You can for instance traverse the follower list of the followers of your followers (ad infinitum), which I often do, or you make voluntary lists like webrings, or blogrolls (my blogroll is in the right side bar). Trunk has some interesting thematic lists with (real ­čśë )people’s activity pub and Mastodon accounts on them for a wide variety of topics. From retro-gaming to sustainability, from cyberpunk to fountain pens, and from witchcraft to gardening.