Hi there! I understand you're having trouble "ducking off" in Clusterduck, and when you try, it just brings you right back. Let's dig into this a bit so I can help you better.

Could you tell me:
- Are you trying to leave a specific match or game mode?
- Does this happen every time you try, or only sometimes?
- Have you noticed if the app freezes or if there's any message that pops up?

In the meantime, a common quick fix in situations where an action in the game doesn't respond as expected on your Mac OS X 10.15.7 is to try restarting the app fully. Sometimes lingering processes cause the game to behave oddly.

Here’s a step-by-step you can try:

1. Quit Clusterduck completely: press Command + Q when in the app.
2. Open Activity Monitor (you can find it via Spotlight search CMD + Space, then type Activity Monitor).
3. In Activity Monitor, look for any remaining "Clusterduck" processes and quit them by selecting them and clicking the "X" button.
4. Restart your Mac to clear any background issues.
5. Open Clusterduck again and try ducking off.

If that doesn’t work, another thing to check is whether your internet connection is stable, as Clusterduck being an online game may return you to the game if disconnections occur.

Finally, there have been reports among some players that after certain events or updates, the game can get stuck in modes and may need an update or cache reset. Have you updated Clusterduck recently from the App Store? Sometimes reinstalling the app helps resolve issues like this.

Let me know what you find after trying these steps, and if it still happens, we can explore further fixes!