When they semi-killed hangouts a couple years ago I thought for sure Gvoice was gone.
contorting to keep it off management's radar, explain away any foibles, redirecting minor funds to get maintenance and tech debt paid off just enough to work another year, someone's going to write that tech story some time.
Even if it's fictional it will be a good read.
Development seems to have (relatively) picked up recently. There was a period of about five years when I don't think there were any publicly announced developments. Now we'll get maybe one a year or so.
It mostly works flawlessly. It's cool that you can use wifi calling when abroad and the POTS network domestically, all transparently from the POV of the person calling you.
I have noticed that some services (Square, Venmo, and Ticketmaster come to mind) don't like sending 2FA texts to VoIP numbers. I end up needing to use whatever SIM I have at the time or a relative's number for those, and I'm low key anxious I'll be locked out of my account someday.
Unfortunately, I went so long without actually using it that they took my number away (my fault because they did send me a warning but I just forgot about it). Now I'm in the same boat as you as I had switched to a Skype Number after that.
But Google Voice is a decent free option to consider if there's someone in the US who could help you with initial activation. Until Google finally decides to kill it, at least. I'm frankly surprised that Microsoft killed Skype before Google killed Voice.