I think i’ve messed something up with my sudo password. I changes my login account from administrator to Standard and after that it wont accept my sudo password. I cant seem to find a way to resetting. (I’m rather new to Linux and an “entry level user” so finding it a bit difficult).
If I understood correctly,this is not a password problem but a permission problem: your user now isn’t permitted to use sudo
You have to log in as root for the things you did before via sudo or (as root user ) re-assign the ẁheel group to your account kristiang:
once you have issued the manjaro-chroot -a command, you answer the question if you have multiple system or if it doesn’t select automatically your system, then you are ROOT user already, on your system in the terminal (prompt should change color to red). Then as you are ROOT user, you do not use sudo so to change the password of the ROOT account you issue the command passwd and to assign the wheel group to your user you issue the command usermod -G wheel kristiang then you exit to unmount the system properly, and you reboot.