Hello!
I tried all solutions to clear recent items list in MacOS under LibreOffice icon, but they don’t work.
I deleted software and installed it again, no changes.
How to clear this list?
Deleting / uninstalling LibreOffice will not affect the recent documents list, that is held in the user profile, LibreOffice user profile - The Document Foundation Wiki
If you want to change the recent document list to a smaller size, 0 is a possibility, (or larger) then Lupp’s answer here still works, How can I change the number of files in recent files list - #3 by Lupp
Take care here, changes happen immediately and you can damage your installation, that’s why it is under Advanced.