When I was a teenager (quite some time ago) our hobby was trying to make something that a local newspaper would claim was a UFO of alien origin. We made them with big ballooons with lights in them and only flew then around sparsely populated places so we wouldn't be found out.
With todays drones and technology it would be much easier. I therefore am very sceptical about any UFO sightings being from alien origin. Especially if they are in the middle of nowhere and the footage is blurry.