Best way to do sms verification?

I've seen mysudo recommended very often, but I couldn't get it working. Maybe because I'm not in the US, or maybe because I use CalyxOS, I don't know.

An alternative I've seen is jmp.chat, however from what I see, they take 3$ per number (so that's triple from what mysudo charges), which I find a bit expensive since I plan to have a couple of them to separate different activities. I'm also not sure whether I can even use their …

privacy sms verification