How to request a new Emoji?
Quick Emoji Background
Emoji are part of an international standard known as Unicode.
Most organizations implement the Unicode standard.
This Unicode standard exists so that emoji and many other characters can all be correctly interpreted across many different computers and different vendors.
Organizations that implement Unicode include Apple, Microsoft, Google, Linux Foundation, and many others.
Adding a New Emoji
If you want to see your new emoji added to your iPhone, iPad, or Mac—and added to all of the other vendors using Unicode so that your emoji works widely, too— here are the guidelines for submitting your new emoji proposal:
https://www.unicode.org/emoji/proposals.html
Adding a New Flag Emoji?
Somaliland, Kurdistan, Quebec, Aboriginal, and other flags have all been requested.
But flag proposals are not being accepted by the Unicode Emoji committee.
Here is why new flag emoji are (not) happening, directly from the Unicode consortium:
http://blog.unicode.org/2022/03/the-past-and-future-of-flag-emoji.html
"The inclusion of new flags will always continue to emphasize the exclusion of others."
Previous Emoji Proposals?
For some background whether your request was already proposed, here is a list of previous emoji requests that were approved, or rejected, or declined:
