I want to buy Pentax KX black, what accessories do I need besides the camera?

Two kits are okay. Whether the shot is good or not does not depend on the lens, but on the technology.

A memory card is a must-buy, and of course the seller may give it as a gift.

You can ask sellers to send LCD films, cleaning kits, camera bags, etc.

You can purchase an appropriate UV lens, which is actually used to protect the lens from dust and damage.

A properly equipped tripod can be used when shooting night scenes.

If I remember correctly, k-x should use 4 AA batteries. You can buy a charging set with 4 batteries. I personally recommend Pinsheng.