Hey Ottie –
The Local log has a number of errors regarding missing containers.
Since the v3 version of Local makes use VirtualBox and Docker to manage the Local sites, a tool like AppCleaner may have removed all of the containers that Local needs in order to use the sites.
You might try downloading Local v5 from the Releases page:
Once that has been installed, can you try restoring the sites to new ones in Local? You can use a backup of each site, or try using the files for each site by following the steps outlined in the “Restoring From Only Local Site files” section of this help doc:
Let me know if that gets you back to working on your sites, or if you have any other questions!