Only craft gold UR gear. Also, only upgrade gold UR gear.
Do not waste resources on purple SSR gear crafting or upgrading.
You will need to upgrade your Gear Factory to level 20 to add stars to your level 40 gold UR gear.
In your gear factory, Dismantle all excess purple, blue, and green gear then Merge all the materials into Dielectric Ceramic. When you get 750 Ceramics craft a piece of gold UR gear.
I copied the image below from another site. The game provides recommendations to help you level up your gear. Neither is perfect but both are good guidelines.
Make sure to start getting Blueprints from the Honor Store as soon as you can. Also, the Glittering Market comes up once a month and is the best source for Mythic Blueprints, try to get at least one every time it comes up.
