I am trying to resize my photos smaller but whenever I resize them, they always come out looking low quality. This happens whether I upload to facebook or export out of lightroom. I resize using a long edge of 1028, but whether or not I sharpen, the photos always come out with a lot of detail lost or pixelation. I've tried heaps of different export settings and nothing works. If I export without resizing, the pictures come out fine.
What software are you using to view these photos outside of Lightroom?
What magnification are you using when you view these photos outside of Lightroom? 100% or fit to screen or something else.
A screen shot (or text version) of your export settings would be helpful in diagnosing your problem.