Try this :
1 - Quits All Adobe background processes from the activity monitor:
Adobe CEF Helper
Adobe Creative Cloud
Adobe IPC Broker
Adobe Genuine Software Integrity Service
CCLibraries
CCXProcess
Creative Cloud
CoreSync
2) Delete these folders :
[MacHD]/Applications/Utilities/Adobe Application Manager
[MacHD]/Applications/Utilities/Adobe Creative Cloud
[MacHD]/Library/Application Support/Adobe/OOBE
[MacHD]/Library/Application Support/Adobe/SLStore
[MacHD]/Library/Application Support/Adobe/SLCache
[MacHD]/Users/Your_session/Library/Application Support/Adobe/AAMUpdaterInventory
[MacHD]/Users/Your_session/Library/Application Support/Adobe/AAMUpdater
[MacHD]/Users/Your_session/Library/Application Support/Adobe/OOBE
3) Empty the trash .
4) Download CC desktop from this link and install it
https://www.adobe.com/fr/creativecloud/desktop-app.html