Tello gives you a real (US though) number, E911 and all, for 5 USD a month. You get an eSIM you can activate from anywhere in the world via Wi-Fi Calling. Send and receive unlimited texts and get 100 minutes a month for the odd service that insists on verification calls rather than texts. I’ve had zero issues.
Apart from that, some payment methods (like crypto) allow transmitting arbitrary amounts. At least, paying for years in advance works without issue. You could pay a few cents and try it out, but be mindful of fees.
Almost all extensions will weaken your security posture. In fact off the top of my head there are basically only two kinds of extensions that could improve it:
ad blockers
(maybe!) password manager integrations
Anything else is questionable at best. Maybe you could create browser profiles where you install extensions somewhat more liberally, with decreased expectation of safety.
Tello gives you a real (US though) number, E911 and all, for 5 USD a month. You get an eSIM you can activate from anywhere in the world via Wi-Fi Calling. Send and receive unlimited texts and get 100 minutes a month for the odd service that insists on verification calls rather than texts. I’ve had zero issues.