Anybody have a tutorial video link for the radio "not you tube", and not a dealer advertised one? If so please send me the link Thank You

So we are having a problem with the apple car play AM radio signal reception, when we are away from our area, and you try to locate local AM stations you get nothing. Is there someone ( resident expert)  that could assist us in this problem.

We have done the reset to North America on it, and it brings in local stations to our area but when searching known other local stations, when away from our area we get nothing.