I see ads all the time for shit like consumer Cellular, mint mobile, stuff that rents time on Verizon towers and sells you a plan for like half the price.
I’m trying real hard to de-Xfinity myself but the cellular plan is the cheapest of all the major companies. Yes, I know they also piggyback off the Verizon network, but at least they have 24/7 support
I use us mobile with two phones and like 30gb each and it’s about $50 total. I’ve had no problems with them and I’ve driven cross country. They are an mvno that runs off Verizon. I def recommend them.
Edit: I still recommend using a provider for home internet. Just cancel everything else besides internet (no home phone or cable tv) and try to find the best deals. I know that’s not easy for a lot of areas though.