They now have receivers that will work for RVs and coverage is increasing constantly. Some folks that have tried it on another forum have been pleased with the results. https://www.starlink.com/ Also, have you tried a T-mobile hotspot connection?
I use Verizon's MyFis for my home internet. These are portable hot spots that work off of an A/C adapter or the rechargeable batteries. I guess with some research you could find a 12vdc adapter. These are great when you have a cell signal. My cell phone defaults to using this wifi signal in my house. So if you are in an area with a spotty cell signal, you can place the MyFi in a spot where you get the strongest signal, and your cell phone can communicate through the MyFi's wifi signal, thus eliminating dead spots. AND you get internet through it. AND you don't have to install an infrastructure in your RV. The cost of Verizon's MyFi varies depending on the base plan you have with them, if any. I added a second one because each Plan comes with 15gb high speed, then an unlimited amount at a reduced speed (there is a story behind how this works with Verizon.) For an extra $20/month, that second one gives me another fast 15gb. On the flip side, satellite internet will work anywhere you have an unobstructed path to the southern sky...even in a remote desert with no cell signal. You can also use your cell phone through the satellite's internet wifi signal. Keep in mind that some (most?) of the satellite internet services take your monthly high-speed allotment and break it down into daily limits. So if you get a 30gb high-speed plan, your speed gets choked back once you exceed 1gb on any given day. I have no idea if the balance from under-used days rolls forward or if you lose it. The issue then becomes exactly where are you gonna take the RV? If you go places where there's no cell signal, the MyFi is gonna be rendered useless. If you park in shaded campgrounds, then a satellite dish is gonna be rendered useless.