Matrix is a host-it-yourself chat platform, but what makes it special is a tech called “federation” which allows you to talk to every other matrix server in the world, making it a very big network of people and servers.
Cutefunny.art hosts its own which is a great place for lolicons
Not many platforms let you host lolis these days. We host nextcloud, which works as a great replacement for sites like Mega/Dropbox. You can subscribe on fanbox and get storage for whatever you’d like, and if you’re a loli artist,contact me and I will give you some for free.