Should I start writing in chronologycal order?

Hello, I've been preparing for years to write a dark phantasy world, and I planned my entire lore, from the begining of everything to the end of everything. Maybe this is too much, but I have the ages figured out, the rise and fall of empires, and entire sagas dedicated to war conflicts. However, Now I'm wondering where should I begin. Started with the story of a bunch of protagonist but now they seem as a small part of this world and I think some things wouldn't feel as important without having the full context of the damage the army they are a part of has done to the world, seeing it from other perspectives in other time periods.

I wonder if I should start in chronologycal order or continue on the order I originally planned and then realize the prequels.

For example, would be like starting the Star Wars Universe by Dawn of the Jedi, continuing through Nights of the Old Republic, and then reach the original story, that would be when Luke appears.

Where should I start?