@Arikania both @Yochanan and @robin0800 are your best options. The Xorg should no longer be used, the Xorg team has for all intents and purposes abandoned Xorg.
Wayland is actually very stable on Cinnamon, there are a few quirks, like tool tips on some Applets showing on other side of screen etc, but as far as once can say that Wayland is ready you could use it daily, as long as your apps don’t require X11.
Which brings to Xlibre, if you need X11, just add the repo for X11 and follow their instructions, it has been working flawlessly on Cinnamon.
Last but not least, you stated that you have been using Cinnamon for a while, you have to keep the Applets and Extension updated, which can cause things like you are describing, see this thread: How to prevent desktop crashes in Cinnamon
Cheers,
-John