Regarding the 1st one, I mean when the navbar is not collapsed.

Do you mean the width of 1 and 2 as marked here?
https://mibo.eu.nostria.app/02826fdbac7443a495dd3aed1c66de6533cd99d6159dec211e32d74ada4d0190.webp
Regarding the 1st one, I mean when the navbar is not collapsed.

You can collapse the text by clicking the expand button at the bottom.
And you can collapse all navigation by clicking the hamburger button.
I honestly didn't figure see this out of the gate.
https://mibo.eu.nostria.app/c3a5260dfb794976574f8396a469928fd3cde1f6b87f00b83a043d610f343500.webp
How come you want it wider (left menu)? Just a preference, perhaps it looks less "crowded"?