I guess the need “I have been looking for alternatives to Facebook, YouTube, Twitter and Instagram” and “tired of the harassment” is absolutely valid 
You will find a good alternative in the ActivityPub protocol. If you are looking for concrete existing things, the Software Category is a good start and then if you’re interested to build new things I would propose to look in the specifications of
protocol
https://www.w3.org/TR/activitypub/
vocabulary
https://www.w3.org/TR/activitystreams-vocabulary
And bonus game: “The ultimate conference”