This may not fully solve the problem, but have you tried using it through Hermit or Native Alpha? These are browsers designed to make websites work like apps on Android.

Combined with my password manager (Bitwarden), it’s usually as fast or even faster than some apps, with a side benefit of a single app install rather than an app for each service.

So far this has worked well for Amazon, Walmart, libraries, my healthcare login, bank, ebay, Home Depot and Lowes, etc.