Avoiding debates & looking into Planes/realms

What should I do if a lot of my friends and family are trying to prove Buddhism wrong with the laws of impermanence or planes of existence, & I do not want to debate this with them as I do not want to arise the Poisons, but I keep getting into it? Also, on the topic of planes of existence, is there any proof in a sense to their existence, or at least anything verifiable by experience to understand them better? I believe the planes, I just was curious about that. Metta to all!