Check out Hermit and Native Alpha. They make websites work like apps. I use them for Amazon, my bank, my medical insurance portal, Home Depot, Lowes, Walmart, my local libraries, dictionary.com, etc. Pretty much any website I use regularly.

Combine it with a password manager (Bitwarden), and it's almost exactly like using an app except much less phone data collected: no location, no installed apps, no phone number, no device or advertising ID, no battery level, etc, etc. Only what I allow the browser to give it (and both of these have settings to limit data collection).

Also, I find it works way faster than some (bloated) apps, and it's a single install for multiple services so I'm not eating up storage for crappy apps.