There is no standard "US-config", it's like claiming you won't be able to get a decent throughput if you're located within the EU.
It all depends on stuff like how close you are to the cell tower, possible line of sight to use upper bands, if the base station is utilizing a fiber attached backhaul, base station load eg concurrent connections (due to crowed areas), available bands, LTE category or 5G fronthaul and the ability to perform carrier aggregation and like, antenna sectors placements and coverage (ie layers as both vertical and horizontal displacements), etc, etc.
To get basic information before buying new equipment just call and ask support. It is also possible to retrieve some useful information using a normal smartphone:
https://www.weboost.com/blog/how-to-acc ... -test-mode
https://www.ubersignal.com/field-test-mode
https://stelladoradus.com/blog/finding- ... test-mode/
And BTW, bring a reasonably modern smartphone equipped with 5g and try to locate a spot somewhere close to home where you can see the cell tower. Then run a speed test to get an idea of what throughput you can expect with a fixed installation.
If you don't have the ability to gather basic information about what your MNO has to offer in terms of LTE/5G, bands etc or lack the technical understanding to make a decision on what equipment is suitable, I'd buy it directly from any of the available network providers with a money-back guarantee if it doesn't work according to your expectations.