Rural area with terrible internet choices (3mbps max). What are my options?

I'm not sure what quality of actionable advice you're expecting here when literally all the info we have is that you are in a rural area with bad internet choices. Carrier availability and regulations differ on a town by town, county by county basis across the US creating a huge spread of potential issues and solutions in the one country alone, and you could be anywhere in the globe. Rural Kentucky is not the same as rural Ontario is not the same as rural Kenya. And, it's likely not a good idea to share a set of personal GPS coordinates with the internet on the hopes that someone might happen to be familiar with your local situation. Maybe it's possible to pay to have a line run, maybe it's not, maybe it'll cost 20 million bucks.

Maybe there's a WISP initiative, maybe there's satellite, maybe you could use mobile data. Or maybe you're just in one of those broadband dead zones in the country that just don't have internet options and won't get any in the near future because of regulatory capture, apathetic political leaders, and the unfortunate reality that poor rural communities really don't matter to politicians with the power to change the regulations to allow for a better internet to come there. Even in south Carolina, a state that matters an awful lot every four years because of the primary there, so many areas have no good internet and no options because nobody cares after the election is over. If you're in one of those areas, your only option is to create a mini political revolution, move away, or just deal with it.