Have you considered doing payment processing, then the output goes to the users preferred payment method? So say my customer pays with a CC (via stripe or braintree on your end) - you could pass that payment along to PayPal, stripe, crypto, etc.

To me, that would be a useful alternative because all I'll need to do is enter my CC info, or preferably use apple pay which is much faster than me needing to ensure I have paypal, zelle, etc. installed.

I'm probably in the minority here, but I know for older people paying by CC is going to be easier than using an alternative payment processor.