I really have the impression that using a smartphone makes a lot people much more dumb with respect to seeing obvious solutions for their problems.
You can print the boarding pass at the airline kiosk at the airport, at least in any US airport I've been to. I always do this.
As noted in a peer post I try very hard to do everything without a phone. I do have a phone but don't want to depend on it.
Boarding passes in particular seem very unreliable on a phone. I always have the paper boarding pass printed at the airport but for curiosity I check the phone app boarding pass. More than 50% of the time the phone app boarding pass hangs from bad connectivity while standing at the gate and I can't retrieve it. Fortunately I always have the printed boarding pass so that always works. Paper does not rely on internet connectivity so it will always be infinitely more reliable.
So that is half of 1%.
Now try in any one of the other 194 countries in the world.
I, sadly, live in a small island and fly a lot. I haven't been able to do this in years.
I’m not sure about Wizz Air, I’ve never flown with them and their website isn’t quite as clear as Ryanairs.
[1] https://www.ryanair.com/ie/en/lp/explore/digital-boarding-pa...
Also luggage check-in counters will print a boarding pass.