Ask what has already been tried before presenting the obvious answer as a discovery.

The obvious answer is obvious to the people living with the problem too. They have almost certainly tried it, and the reason it failed is usually the interesting part, containing a constraint you cannot see from outside. Arriving with it as a discovery skips all of that and quietly suggests that nobody here had thought very hard.

Open with a question about what has already been attempted and what happened. Listen for the constraint rather than the outcome. If your idea survives that conversation, it will be a much better version of itself by then, and it will be welcome.