Hi, @Sexybaldguy
Looking at the web page that @apandada1 (Archisman Panigrahi) mentioned - https://cdimage.debian.org/debian-cd/current-live/i386/bt-hybrid/ - If you scroll down until the end of that page, I would say that the file you need to download from there (for Debian MATE, 32-bit, 11.6 version - which is currently the last point release of Debian 11 a.k.a. "bullseye") is https://cdimage.debian.org/debian-cd/current-live/i386/bt-hybrid/debian-live-11.6.0-i386-mate.iso.torrent
Do you have any strong reason to want to delete your profile / account that you have here in the "Ubuntu MATE Community" discussion forums (that are "powered" by the "Discourse" software)? If you don't, I would say that you can just log out, yes (by clicking on your profile picture and then, in the context menu that appears, click on the "person" icon - which is the rightmost icon - to show the "Preferences" menu and then click on the "Log Out" option, which is the last option in that menu).
If you really want to delete your "Ubuntu MATE Community" account, the most relevant information that I could find about that was the following reply by @lah7 written in September 2018: