The general perception is that lower frequencies/longer wavelengths travel farther than higher frequencies/shorter wavelengths. That is not really true, but it does work as a common simulacrum for a more complicated relationship.
In free space or clear air, all frequencies effectively travel equal distances. The issue then is antenna aperture. Higher frequencies have smaller antenna apertures, so less emitted power is received at the same respective distances. That is what is known as "path loss" and leads to the popular idea that lower frequencies travel farther.
Additionally, the real world RF environment is typically far from free space. Instead, RF must pass through, reflect off of, diffract around numerous objects. Different materials have different frequency dependent attenuation factors. Not all materials function as low pass filters. Sometimes, higher frequencies actually have the advantage. But in most cases, lower frequencies are less attenuated. This, too, supports the misconception that lower frequencies travel farther.
AJ