Remember that Admins can see DMs. Check out a secure messaging app if you need something closer to actual privacy.
Pretty Queer Online Instance

Cozy little instance for anyone who is comfy being part of something called "prettyqueer.online". We have a small cap right now and don't plan on increasing it, so if you know one of the admins, you might ask for an invite but otherwise, it might be best to find another home. <3