After 3 days I booted into Manjaro and got notified for a upgrade. I tried using pamac and gave me a strange dependency error for lib32-glu and mhwd.
If lmhwd and mhwd-db is selected for upgrade then lib32-glu breaks. If they are not selected then also lib32-glu breaks.
After this post, I rebooted to Ubuntu and ran
grub-update as part of a repair steps. I didn't worked and after that when I tried to boot back into Manjaro, it simply failed to boot up. please help
Edit 1: Manjaro boots up but GUI doesn't comes up, no matter how much I try