Ask HN: Alternatives to (Enshittified) Google Voice?

I've been using Google Voice for holding on to my phone numbers for more than a decade, even though the actual phone service has been with many carriers with unmemorable numbers.

Google Voice has dropped way too many calls for me of late to be tolerable. I'm hence moving "my number" to an actual carrier service, but that still leaves me locked-in enough to be painful when I need to change carriers (because of their own enshittification).

What do others do? (SIP service? Something else?)