...1). You Must Understand Her Mutual

Intention, Whether She Feel The Same.
You must understand if both of you are on the same page about your future together? A public proposal is not just a declaration of love; it’s a question that expects a “yes.”

Ensure you’ve had discussions about your future and that you’re confident she’s ready to take this step with you.

Nothing spells disaster like a public rejection, which can be mortifying for both parties involved.

2). You Must Understanding Her Public and Private Personalities if she is Comfortable With Public Displays.
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https://naijacurrent.com/top-4-crucial-insights-you-should-know-before-you-propose-to-her-in-public/

Don't do it. Simple.

Why do you even need the public gaze in your family affairs? Propose in private and if she refuses, then fine, life's goes on.

3). Use ur head.

why you go even allow your brain to reason carelessly...

4). Do not loose guard.

As a man you should always be on guard. which kind yeye public proposal. Aboi shelve that plan.