Here are my files to run an automated cycle for leveling, just run gcode as a print and the nozzle will home then touch the bed at all 4 corners then center stopping for a few seconds, then repeat speeding up each time.
If you want to learn how I use these for perfect bed leveling see here:
https://www.youtube.com/watch?v=RJC7N4Vb9AY&t=157s

I have codes for Ender 2, Ender3 family, CR10 family, and Wanhao i3 model

If you like them let me know!