I've been needing/greeding on things I don't need simply for the GC seals. Truth be told that when I actually needed that gear as an upgrade, someone was rolling on it too that didn't actually need it. It just is what it is.

NO reason to get gud or anything like that, it's just simply up to RNG.

*You could also state in party chat that you wan/need that piece of gear. Usually if someone does on a piece of gear I really don't need, I'll immediately switch from need/greed to pass.