Can I ask the moderators of this instance to delete my posts without a trace so that they are not in the federation database?

Is there a way to chat safely on Lemmy? Alas, I like to communicate with different people from different countries, because I can’t help myself, by the way, how then can I pass the keys to my matrix room to others or how can others give their keys?

Tips for online communication in a world where super-AI is perfect at finding people by their patterns and linking it to a person in a database.