Low poly water

Hello im trying to make a low poly ocean that moves but cant figure a way out I try using this Coconut Express Bonus Content: Low-poly Mini-Tutorials! - Broad Strokes but its very confusing to me and would be a great help if someone could tell me how

I was having the same issue a while back on one of my projects.
I found a dude who tweaked it a little (added depth fade and swizzle) so I asked him.
he posted several screenshots of the material he made. helped alot.
heres the vid: Low Poly Water Test - YouTube
our conversation is in the comments. ^^ hope it helps.