Native VLAN, what do you specifically think and know?

Question

network hardware

Hello gentlemen specialists / experts / comrades!
I would like to know your opinion regarding Native Vlan.
It’s clear that the question is from kindergarten, but I didn’t find it on the Internet (or maybe I didn’t search it well?)
Why, how, why, without it, how, with it, why, from where, - if you understand please write.
Thank you for your attention.

Answer 1

I couldn't find it on the internet (maybe I didn't search properly?)

Apparently they weren't looking at all. Do not do it this way.
Native VLAN

Answer 2

Apparently I didn't search well :)
In a nutshell: untagged traffic = native vlan. The case when the port is trunk and separation by l2 is not required.