MUFON? Cool. I’ve often wondered the same thing.
If some civilization had the math, the ability and the means to travel the vast distances of the universe only to get here and crash then they have some issues going on the need to address.
The other thing I’ve also wondered is: How would they even find us down here?
We humans unconsciously assume "they" may be remotely like us. That is almost certainly an error. They are most likely not like us at all. It's possible that some “objects” we see that display impossible maneuvering abilities aren't ships but living beings that are not corporeal as we experience it. I'm speaking of some of the 'balls of light' objects. They may be capable of travel in a way we do not understand at all.
The ones that look more metallic and substantial may be probes. Their sizes and shapes may relate to propulsion rather than cabin space. I don't think beings waste time coming here in ships, flit and leave without even stopping by for coffee. They know all they need to know about us and we don't even know if they are secretly guiding us somehow or just studying us like we study germs.
We’ve been sending out signals for more than a century.
We practically “glow” to anyone who wanted to find us.
Interesting point, but then imagine bringing a person from 100-200 years ago to the present day and show them automobiles, planes, rockets, utilities and home appliances. They would probably be amazed by such incredibly advanced technology and then be dumbfounded to learn about the thousands of people who did from accidents related to these scientific marvels.
If alien visitors and UFOs are here, it doesn’t mean they are gods, perfect or immortal. Rather it just means they are more technologically advanced but every bit as susceptible to making mistakes as we are.