For a few years I have needed WIFI in an area with little coverage, where no cable, no fiber, or anything else reaches. The companies in the area with WiMax technology do not cover it either, so I have been with an Orange 4G router for several years. I didn't get much bandwidth, only 3 -5 Mb but that worked for me. This year it did not exceed 200Kb so I had to look for options.
After trying several acquaintance cards. The company that works best for me is DIGI and to use its 4G coverage I have compared a 4g router, The Tp-link Archer MR600 and the results after a small configuration have been very good, achieving 15 to 20Mb of download.