I used https://juicysms.com/ for sms verification. It’s a paid service (I used monero).
worked perfectly for me.
I needed it for aurora store.

This is exactly what I am doing.
I am very grateful to the foss community that this is possible.

I am on proton plus, have to decide between proton unlimited (1/2 year plan) to get proton vpn, or continue with proton plus and get mullvad vpn.