To get this specific legacy version, you typically need to access the Wurst Client Official Website and navigate to their archive or version history section.

Place both the Wurst JAR and the Fabric API JAR into your Minecraft %appdata%\.minecraft\mods folder.

X-Ray, FullBright, and Mob ESP for navigating the new Nether biomes. Movement: Spider, Step, and Jesus (walking on water/lava). Combat: KillAura, TriggerBot, and AutoClicker. Automation: AutoMine, AutoEat, and AutoFarm. How to Download and Install

Locate the "Wurst Client v7.1.2 MC1.16-pre1" file from the official Wurst download page.