The architecture of the game. How to separate menu from the game loop?

My question relates to the professional developer who knows what, how and why.
I am familiar with the basics of C#. Including the PLO.
There are difficulties with understanding delegates and events, ie how it works.
Planning to write a game. No Unity, Win Forms or Monogame. Start simple.
And on simple the question!
There is a menu. Let's say, 3 points. To play, "Settings" and "Exit".
How to separate these 3 cycles? Main menu, settings menu and the game loop?
In Python, I would not bother, but in C# OOP model and I need to do it smart.
How? And most importantly, how?
Thanks in advance!
April 19th 20 at 12:33
1 answer
April 19th 20 at 12:35
maybe you have to meditate here - Cycle events
and here is command based application event loop (upd in this place can and should be creative to change the query to complete enlightenment)

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