Guild Wars 2

Celestial, Valkyrie & a few other armors & weapons are only acquirable trough crafting.
No doing dungeons, wvw, karma merchants, other merchants or loot drops give you a chance of getting them.

You basically have to start getting a load of crafting professions up to max, spend a ton of time & money on doing that & getting everything you need to get those things even though it’s mostly stat combinations that are relatively unpopular.

All the others can be gained trough a variety of means. Those options to reach your goal that make a lot of quests in the game so nice are totally abscent here for certain specific sets.

I don’t understand why.

Good luck finding an answer that makes sense. While they’re at it, maybe someone can explain why ascended trinkets still don’t exist for stat combinations like Magi and Cavalier.