> You could call the store or your friends, no ads there.
If everyone called the store to check if they're open instead of looking on instagram, the employee would never get time away from the phone to actually serve customers, you're suggesting something ridiculous. Text and phone calls aren't replacements for each other either between friends.
> What are these apps that are required for your daily life?
The app I have to use to buy train tickets has ads in it, mostly for fashion items sold at stores within train stations.
The app for checking train schedules is full of ads, and while there are open source apps on android for this, on iPhone you can't sideload open source apps so there's no ad-free alternatives. Releasing an app on iOS costs $100/year for the developer, so the incentive is not to make free open source apps. I really miss android. The iOS app store has so much completely garbage adware, and I can't even code up simple ad-free apps for myself without buying a macbook.
The app I have to use to send support requests to my landlord (an app dedicated to just that purpose) has a couple banner ads. The corporate landlord requires using it, and will not respond to phone calls.
My cell phone company's app, which is the only way to check my plan's remaining data, has a truly incredible number of ads.
.... and that's just off the top of my head. They're everywhere.
But even if all my apps were ad-free, the billboards posted everywhere, on busses, in trains, on buildings, are inescapable.