I just want to push a on off do not disturb

This could not be easier. No shortcut is needed. This works from any screen. You don’t need to be on the Home Screen.

Pull down in the upper right corner of the screen to get to the Control Center. Tap on the Moon icon within the Focus button. When you want to turn DND off, tap in the moon icon again.

You can also tell Siri to turn DND on and off.

cheryl ~ Choose an on/off toggle, small or large:

Here's the iCloud link: Toggle Disturb

...Tapping that link should show a blue Get Shortcut button at the bottom – the shortcut will be added to your shortcuts collection. Then, to add its small icon to your Home Screen:

Add a shortcut to the Home Screen on iPhone or iPad

Or, for the large icon:

Set up and run shortcuts from a widget on iPhone or iPad

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Yes, very much the On/Off featire still exists with variety of other options. Simply Tap to On and Off.

Please pull down the control Center and watch the fun. See the pic below which is self-explanatory.

This GIF may help you too.