Use Attunement to increase the drop chance of an item.
Gear Focusing is a great way to seek your attuned item.
Every day, a different region of Kepler is targeted. Mysteries can be reset in that region, and gear focusing uses that region's materials.
Higher World Tiers multiply all material rewards and increase chances of gear drops.
Unlock higher gear tiers by completing World Tier quests and purchasing vendor upgrades.