I happened to have a spare number that I wasn’t using with JMP.chat. So I ported it over to US Mobile.
They offered a 30 day trial if you port a number over. They probably still offer the trial. I still have a week left and I liked the service so much I already ported my real number over. The trial was completely free.
I ended up having to order their sim starter kit because for some reason my Pixel 4a 5g wasn’t compatible with their eSim on their Warp 5g(Verizon), which I wanted to try. When I portrs my real number over I did it on their GSM(tmobo) network with eSim and it worked fine. You can get the sim starter kit for free with some promo code they have listed on their site somewhere.