"Ubuntu on Wayland" should be installed by default, unless NVidia proprietary driver is in use (and it might be by default).
We recommend uninstalling the driver, which can be done by calling
sudo apt purge 'nvidia-*'from the terminal window.
Other methods might involve manual recreation of initramfs or changing parameters passed to the NVidia kernel module, e.g. https://discourse.ubuntu.com/t/nvidia-prop-driver-support-in-wayland-session/10442/5
Please note, these methods are not officially supported and unistaling NVidia driver is recommended.