Have you ever really seen a bonafied UFO? Seriously! Cause I have!!!?

I saw it make 3 distinct direction changes that were so sharp and quick( all totalled, I saw it for about 5 seconds before it took off and was completely beyond the horizon). There is no way that any aircraft that I know of could have made such sharp direction changes and accelerated with such speed that the pilot would be able to withstand the G-forces. I know that somebody will dispute this but if they were standing where I was standing and saw what I saw, I would like for them to try to reason what they just saw. Why do most videos just show something going in a straight line or floating? What I saw was crisp and decisive, Awesome!