Updating node v18 to v20 Ubuntu.. root and non-root showing different versions

Hi there, I’m trying to update node versions from v18 to v20 via NVM with a droplet that was created with node from the marketplace. Node installs just fine, I can set the version nvm use or nvm alias default vx.x.x. Challenge is for my non-root user the version shows as v20.12.2 (correct) but not when using sudo node -v or nvm ls As Root:

node -v
v20.12.2

As non-root:

nvm ls
->     v20.12.2
         system
default -> v20.12.2

node -v
v20.12.2
sudo node -v
v18.12.1

How do i make the update to the right version? thanks in advance