If you have a problem with attention, just buy a flip phone, they still exist.
"Perhaps, like most people, you need a smartphone to fully engage with society (like with QR menus, the bane of the dumbphone life!)."
As for TOTP - this one is very universally doable on desktop, like with KeepassXC. Or you're talking about logging in outside your home, like in a library or computer club?
It boggles my mind that so much innocuous activity got sucked into smartphones. It is not actually more "convenient" to download yet another app that wants access to all my data, just to pay for a parking space, when my credit card is on my person and kiosks do not take up that much space.