Audio assets

I am looking for sets of SFX sounds (no more music please, market is full of that already).

By sets i mean sounds that are fitting together, for eg:
2-3 different sounds for plasma/scifi gun
then some hit sounds of that plasma
then some explosions cause by that same plasma
then i need fitting sounds for plasma gun, like reload overheat, out of ammo.

Finding single sounds is not problem, but they never work together.

then finding ambient sounds (not ambient tunes) of machinery that sounds like it is from same universe as plasma is even harder.

So best would be if you could deliver complete sound packs, like weapons, machinery, doors and lifts, robots etc. And all of those sound from packs worked well together.

This same problem applies to most of art on marketplace, i can buy several environmental sets and several characters, but it is impossible to gather coherent library to do any game. Authors that produce assets for marketplace should make all packs compatible (or look like they could be from same game).