How can I isolate WhatsApp from the rest of my phone?

I use Signal but unfortunately, none of the people I communicate or would like to communicate with do. Everyone here pretty much exclusively uses whatsapp, even businesses.

Is there a way that I can use the app on my phone but it would not be able to ID me, my phone or anything in it, completely sandboxing it?

I know of Island and parallel space type apps, but how airtight are they? I assume not as airtight as Facebook's snooping …

phone privacy rest whatsapp