If you're asking me for my personal experience with such dark patterns on android, I don't have any stories to tell you. None of the apps I use on android are paid for, have ads or subscriptions, much less un-subscription dark patterns. For things like Uber or banking, Google is not a middleman in my transactions with those companies and I've never seen or felt any reason to desire otherwise.

If an app asks you to pay for a subscription and you don't like the payment processor the app uses, then don't use the app. It's really that simple.