I just successfully installed & opened in Wayland varia (it is in the AUR).
The application’s user interface is built using GTK 4 and libadwaita, meaning Varia looks perfectly in-keeping with other modern GTK apps run on Linux:
Package Details: varia 2024.5.7-1 - AUR
There is a Firefox add-on available too (I didn’t check for Chrome-based browsers):
You can build Varia via the Pamac GUI or by running the command pamac build varia (DO NOT use sudo for that command)
Advice on using the AUR: Please note that it is unsupported and there are risks, especially if you use it while on Manjaro’s Stable branch (which is not as close to Arch as Testing & Unstable branches):
If you don’t feel comfortable using the AUR, then @omano’s advice to switch to X11 may be more useful to you (you should be able to choose the session type via your login screen - I don’t use GNOME, so I’m not entirely sure where that option is. If GNOME uses SDDM, it should be at the bottom left of the screen).