I have been doing this and it works pretty well and I am on the road a lot. I do have 1 work phone that has bailed me out a couple times but...

https://calyxinstitute.org/ I picked up their 5g modem you pay upfront for the year but it is registered to a privacy focused non profit. All my devices tether to it.. My newest (degoogled)phone has only ever been connected to it... Signal/SimpleX/Matrix handle my voice/video depending on the community