Yes, I'm not familiar with any router that has USB-in.
I have a couple of old Netgear routers at the ranch as Ethernet-in, wifi out repeaters, and setup is a PIA. I found an ASUS router, RT-N12D1, $16 on Ebay, that has far simpler bridge/repeater setup than Netgear. I like this model, I'm using one in the center of my home in town, also fed via EoP, for uniform wifi throughout that house. The ATT FTTN service there is even worse than out here at the ranch, it goes down for a minute dozens of times a day and maybe 30 tech visits over several years hasn't been able to fix it. Everything my side of the outdoor junction box - including the ATT router - is now second or third generation replacement and no tech visit has provided flawless service past 24 hours. I've had it with ATT. At least in town there is fiber available - at perhaps double what I am paying for 20gb service now.
I followed your suggestion and looked for WISP's here. A couple are single-location far from me, another starts at $59 for 1gb service (location unknown) and two took over 30 seconds for their web page to come up - then didn't show cost or location. One I looked at seemed to be a broker elsewhere who claimed he could set me up with someone local - for a fee. There clearly are WISP's serving remote high-end wineries that are way out in dialup country, but the expensive full-service IT support that they offer is more than I need, or want to pay for. I think I'm back to phone hotspot as the only practical alternative to the flaky ATT FTTN.