The external VPN provider dictates what my interface's IP range is. I generated a new WG config using the UI, and it comes with interface IP 10.66.123.123/32. If I want my home ip to be 10.10.0.2/32, then I'll have to set it as 10.0.0.0/8, and the VPN provider didn't seem to agree with that.

I have two wg interfaces and I manually switch between them.