I’ve heard it has extreme resource usage and that defederation is a big issue.

I have edited it, it should work now.

You could remap some of the extra buttons that some phones have, but that probably wouldn’t be enough buttons for you.

From the top of my head, you could use headphones with control buttons.

If you don’t use headphones, maybe something like a Bluetooth media button could work: https://satechi.net/products/satechi-bluetooth-button-series/