How to get all Z-Crystals in Pokémon Hyper Emerald V5.6(English)

This is after the fight with Red ontop of Mt. SIlver. I used a Rattata with Endeavor. it will learn that move upon reaching Lv. 34, upon request I can make a video on how to do that. Arron with Endeavor(egg move) is also recommended because of sturdy check points will be added in the video for further help