I will surmise this kinda quickly for you.
I just came across a little app to make setting the Do not Disturb in your settings easier and colorful & very user friendly.
Adjust your DnD in just a click of the app and change the settings as you need to before you even know how to get to them.
You must have Android Pie or later to use this from the Google app store!
Easy DND (Do Not Disturb) (Unreleased)