The font used ‘Avenir Next’ while a classic font (and one of my all time favourites) I’d like to question why this is the font being used?
It is quite an extended font, which on narrow screens takes up valuable screen real estate.
Why not use something more condensed? Even Roboto would be a better choice in this regard.
Inter is very versatile, and it is open source: https://rsms.me/inter/.
I think this would be a better choice.