After Hurricane Katrina it was pretty much impossible to get internet in many areas along the Gulf Coast for quite a while. I ended up adding a hotspot service to my cellphone plan (back then you had to actually buy a hotspot because cellphones didn't have them built in). I was able to get speeds of between 2.5 MB/S and 5 MB/S and was more than a decade ago. As stated above, that might be your best bet if you can't get broadband from an ISP.