i do almost nothing on cell phone. the mobile UX for big sites just plain blows 99% of the time. i use a handful of apps to check the status of things and i even use an app for the fediverse.
doing things like shopping or paying bills or whatever is always on a real computer, where i have easy access to the full suite of tools in a nice browser with extensions to make it so i can adapt and overcome the latest asshole marketing driven mechanic.
in rare occasions i might casually browse a few specific and not hateful shopping sites on my phone, to do basic shit like check prices, but if it becomes more serious, i switch to computer.
my parents and other family members seem to try and do everything on their phones and it looks absolutely brutal