Please do what the error message says. systemctl status systemd-modules-load.service
On a general note, always read error messages carefully, they often contain information on what to do next. In the above case, it literally gives you the exact command to run in order to get more info.
is it safe to assume you were messing around with video drivers before this happened? it's looking for nvidia modules and cant find them.
since you cant get youself to a graphical desktop, please do the following commands and provide the links after the last 2 commands. (if your not connected, use nmtui to activate a wifi connection first.)
This will give you default Bumblebee. Check Arch wiki about Bumblebee and see if it works correctly. For using Vulkan you may want to set nvidia-xrun:
Do backup (with timeshift) so you could restore system setup if you mess things doing next steps.
Install and setup correctly optimus-manager, read:
Be aware, it will mess us Bumblebee. In theory, uninstalling optimus-manager should restore Bumblebee, but in case it is not, restore system from backup.
Why would you want uninstall optimus-manager? It's in beta and don't work for all, but if it does, IT IS THE MOST OPTIMAL SOLUTION FOR GPU CARDS. This is what I use, although I'm sitting on old version, because newer ones don't agree with my computer from whatever reason. 0.6 version works perfectly for me.
If nothing works and you really want to play a lot of games and you are ready to give up on using laptop remotly (short battery life), use Prime setup. There is a tutorial how to do on Manjaro forum. Search for it.
if it shows no video drivers then yes, sudo mhwd -i pci video-nvidia
and decide which option fits you best. i recommend either full time PRIME or optimus-switch which has nvidia prime mode setup exactly like PRIME and intel-only mode where only the iGPU is used and the nvidia is powered down.
i know those 2 methods work, so thats what i recommend to people.
i dont know what thats all about. try rebooting and from grub instead of hitting enter to boot, instead hit ' E ' and find the word "quiet" and replace it with the number ' 3 ' and then CTRL+X to boot.