The other thing with T-Mobile is you NEED a phone with Band 12/71 if you are going to use them.
iPhone 7 (what's listed in your profile) only has Band 12, and they do not have that "everywhere", but B71 is pretty much everywhere. You're going to want to try a newer phone with ALL of the bands. I have an iPhone 12 and never have an issue with service traveling all over the country for work.
Also, for Verizon proper.. your best bet is either something like RedPocket ($20/mo unlimited and 3GB of LTE) or if you have Spectrum or Xfinity, just do a "by the gig" mobile plan and pay ~$15 for unlimited talk/text/1GB of data on verizon's network.
https://www.redpocket.com/plans
T-Mobile: Magenta Amplified (airline employee plan)
AT$T: $50 Unlimited Elite Prepaid promo (for more “rural” areas)
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