The problem is not there there is no evidence of alien contact—there are thousands of people who claim they have seen, been abducted by, spoken to by aliens.
Science calls their testimony “anecdotal” and therefore ignores it.
Is the problem with the witnesses or is the problem science and what it allows as “evidence”.
The problem is science. Data, evidence, and narratives are filtered and imposed with an agenda. Especially in the fields of history. There is something they are hiding about our history. And these UFOs and what they are hiding in history may very well be the same.