These are your quick wins. Do these first every time you log in to build a baseline of diamonds and XP.
If you have Robux, the 2x and 4x Diamond Multipliers are the biggest "hacks" for farming. They stack for a total of 6x diamonds every time you level up or pick up a gem. ROYALE HIGH GEM FARM SCRIPT
Complete tasks like "Run a Mile" or "Musical Chairs" immediately. These are your quick wins
If you want a change of pace from Campus 3, use these classic methods: or even a Halo.
Make a wish every 2 hours. You can win diamonds, XP, or even a Halo.