Just my opinion here:
I don’t think that aliens with the ability to travel between stars to investigate us will hang out where we can see them. They’d be aware of our technology, so would either stay far enough away that we can’t see them or they would camouflage/cloak themselves.
Also, why would aliens even be here? Space is big. Evidence of our existence is small. The combination of those two facts leads me to conclude that even if an alien society capable of interstellar travel existed somewhere in the universe, they won’t visit because they have no idea we’re here.
You will definitely see thousands of UFOs but none will be alien.