How to import uasset files?

When I select Import in the editor it only tries to import other formats such as obj, fbx, textures, etc. It does not import uassets.

For full packages from the marketplace I get that, I meant more like uasset files that I purchased (which are not complete packages such as a map with blueprints or a character with control rig). Or even if someone shares a file such as an object with materials and textures all in uasset format. It seems there is no easy way to import these files. If I drop it in directly through windows then none of the materials and textures are connected

Considering uasset files are Unreal’s own file format there should be a way to simply import files from other places. Such as buying a shader or a character from places like Artstation, gumroad, or even files from tutorials.

Migrate files from one of your own projects to another one of your own projects on the same computer is simple but for some reason trying to import files from anyone else’s projects is very complicated and often does not work correctly. I end up having to rebuild materials, link textures, etc all manually this way