... make sure you are following a bunch appropriate #hashtags and sharing with people or else you won't find any interesting content: You like #music or maybe you are interested in #streetart ?Hope that is of #help
Also make sure you engage, leave comments and use proper hashtags in your own posts, otherwise we wouldn't be able to find your profile and/or content either.
Everything here is done manually by it's users. It's up to the community to distribute content, support each other and invite new people.
There is no central system that determines and/or dictates what people see.
You can find out more at the FAQ for users [link].