UFO's are a subject that I try to carefully "ringfence" away from the modern era of Chemtrail/Qanon/5G etc menagerie of disinformation, because I consider the former fundamentally different from the latter.
UFO's are not a "science" story... At least not yet. UFO's are a *government* story.
The evidence I would present is the multiple independent government witnesses who have testified under oath of unethical and illegal concealment of NHI by rogue elements in the DoD and IC. Claims that, in the case of David Grusch at least, were made under oath to Congress and were deemed by the IC IG as "credible and urgent."
The point is not Neil deGrasse Tyson scoffing about faster than light travel. It's, what precisely does the government know about this that they're not telling?
Let's figure that out and we'll get to the "alien" parts later.