How to send a message by a bot to a specific channel with reactions assigned to it?

Question

Bots

How can I make the bot create a message with roles on the first run, and not create a new message after restart? And so that it processes the created message through on_raw_reaction_add and on_raw_reaction_remove. For example, like MEE6.

So far, only managed to create an Embed message. True, he creates it every time he restarts and does not add a reaction.

I use the library - discord.py.