Roms

Arrow OS:-

https://forum.xda-developers.com/asus-zenfone-max-pro-m1/development/rom-arrow-os-t3841027

Lineage OS:-

https://forum.xda-developers.com/asus-zenfone-max-pro-m1/development/rom-lineageos-16-0-t3830179

Pixel Experience:-

https://forum.xda-developers.com/asus-zenfone-max-pro-m1/development/rom-pixel-experience-9-0-t3832549