Nope. Not even any good suggestive evidence. Sorry; nobody would be more excited and happy to find proof of extraterrestrial life than me, but so far there isn't any _PROOF_.
Apparently, there have been strange sightings, but there has been no evidence or proof that an extraterrestrial being (alien) has actually been seen.
NO!
The Loch Ness Monster has been spotted many times over the last 200 years. Whether these have been genuine sightings, optical illusions or mis-interpretations of something floating semi-submerged, is a matter of sometimes heated discussion. There have been a few genuine scientific surveys using sonar equipment but there has been no unequivocal proof, one way or the other.
there have been sightings of alien spacecrafts but nobody knows if those people were crackpots or what so really, no one has any idea
No recognizable pattern to locations or time; however, when there has been a sighting somewhere there often are more close by and soon afterwards.
probably not, there isn't any proof that there has been abductions anywhere, but it isn't impossible
There's been rumors about aliens such as people saying they've seen one, but there has never been proof.
there has been some white puffle sightings
Nessie is crypted, meaning that there have been sightings but there is no solid scientific proof of it. I personally believe Nessie and her bretheran are real.
A number of people CLAIM to have seen aliens, or THOUGHT they had seen aliens. So far, though, there has been no proof one way or the other.
Apparently they are not real, as there has never been any firm proof of their existence.
Yes, in the sense that people have seen Unidentified Flying Objects. However, there is really no credible evidence that any of these have ever been alien spacecraft.