How to reinstall lightroom on macos 13.6.3

On my Mac when I hit roadblocks like this, I would recommend trying to setup a new user account on the computer and see if that user account runs into the same issues. I've run into a few instances over the years of user profile corruption where I eventually just moved all my files from one profile to another and then moved forward with apps from there.

install the cc desktop app from here https://creativecloud.adobe.com/apps/all/desktop?action=install&source=apps&productId=creative-cloud and use it to install your adobe subscription and trial programs. 

if you have trouble downloading the cc desktop app or you see an error message when trying to install, make sure you have a compatible os (https://helpx.adobe.com/creative-cloud/system-requirements.html), and use the alternative download links at page bottom here, https://helpx.adobe.com/in/download-install/kb/creative-cloud-desktop-app-download.html