How do I start from ALMOST scratch!

Basically I want to remove all integrations except for like my duck DNS remove all devices except 1 or 2 things probably everything else I’d like to be removed and then re-discovered and configured all over again so I can fix some other errors in different areas. Can one of you HA experts tell me which files to clear out or delete so that my image is just above the basic start so I don’t have to start completely over. Thanks in advance hope that I did not post this under the wrong category.

Take a backup of your yaml files, nothing else. Do a fresh install and copy back your yaml files one by one as needed.