How to fix improperly uninstalled software on Raspberry Pi (Buster)

First and foremost, I'm trying to purge an improperly **uninstalled** version of Intellij-Idea on Raspberry Pi and reinstall. I installed IntelliJ-Idea on the Raspberry Pi using the below page as a guide: Install Intellij-Idea on Raspberry Pi After progressive success decreasing CPU/memory usage, and countless lock-up and kill the jvm loops, I ran into a wall with continuing "OutOfMemory" exceptions after the application launched fine and ran for a few minutes. (It indexes nearly the entire JVM, maven, my home folder, etc.) Yes, I increased JVM memory allocation (-Xms/-Xmx), increased swap space, etc. Thinking the root of my problem might be a caching issue, I tried to remove a few folders I thought were cache directories, but actually wiped out the main install image and all subdirectories instead. So now I'm trying to force uninstall/delete so I can re-install. I've tried: 1. Uninstalling from Add/Remove Software (Only supporting packages list as "installed". The main install doesn't list at all) 2. sudo apt-get purge/remove intelliJ* (see below output) 3. sudo apt purge/remove intelliJ* (ditto) 4. Got frustrated and manually deleted all the other "IdeaIC2021.2" and related folders (after backing up key config files) The start menu link won't work now of course, but I can't get pi to truly purge details and let me reinstall. Bizarre half-installed state messages: ~~~ pi@raspberrypi:~ $ sudo apt purge intelliJ* Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'libjdom2-intellij-java-doc' for regex 'intelliJ*' Note, selecting 'libintellij-annotations-java-doc' for regex 'intelliJ*' Note, selecting 'libjdom2-intellij-java' for regex 'intelliJ*' Note, selecting 'libintellij-annotations-java' for regex 'intelliJ*' Package 'libintellij-annotations-java' is not installed, so not removed Package 'libintellij-annotations-java-doc' is not installed, so not removed Package 'libjdom2-intellij-java' is not installed, so not removed Package 'libjdom2-intellij-java-doc' is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. ~~~ Yes, I'm an idiot for deleting the wrong folder and then digging the hole deeper, but at this point I just want to overlay with a new install anyway. What's the correct way forward? Manual download and install because pi's registration details are horked? A set of sudo apt-get install commands?