Do I need to uninstall apps prior to clean installing OS?

are you just installing win over your current problem?  if so, then yes, it would be pruduent to uninstall adobe cc apps and then reinstall.  if you're reformatting your hard drive (after backing up your data), then no, you don't need to uninstall anything cc (unless some of was installed on a non-os drive.

to uninstall:

uninstall every cc app  per https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html

then uninstall the cc desktop app, using the correct uninstaller per https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html#sa_src=web-messaging

install your os

reinstall the cc desktop app using*



*
use the "alternative download links" at the bottom of the page at https://helpx.adobe.com/download-install/kb/creative-cloud-desktop-app-download.html

use the desktop app to install your cc programs/trials

NOTE: win 11 users that have trouble with the latest win 10 installer often have success with the older win 10 installer.