You don’t believe that aliens have visited us because there hasn’t been overwhelming clear evidence, but youre willing to believe that institutions aren’t able to cover it up because a friend of you who works for these institutions says they wouldn’t be able to keep it hidden? You have no idea how many incidents there have been, there is no data whatsoever. You base your statement on the statement of a friend. Don’t cherry pick your beliefs. If you don’t believe in aliens that is fine, but don’t counterargue with something you don’t have any data on either, because that is just hypocritical