There's definitely other life out there, but given a basic understanding of space and light speed travel, there is a zero chance we've made contact with non Earth life. The government has a direct benefit in claiming aliens or UFOs when testing their super military tech so our enemies are mislead on our militaries capabilities.
Like when trump posted a classified satellite image. Our population and all other governments had no idea we were capable of such clear satellite surveillance.
On the contrary, I'd recommend looking up the Fermi paradox. It exists because if we assume that ftl is impossible, both in a literal and effective sense, a civilization with the capability of long-range subluminal travel would still have the ability to colonize the galaxy within a few million years.
Now, you might be tempted to think, "okay, so a few million years from now is when we'll start seeing them", but that's assuming they took as long as we did to evolve intelligence. If I'm not mistaken, there's some speculation that dinosaurs were a significant contributor to delaying the rise of mammals, and those were around for over 100 million years. What if a civilization skipped the "oppressed by giant lizard-birds" stage? The result is that they'd potentially be millions of years ahead of us technologically.
Also, because I regularly see this question pop up in any conversation involving aliens,
"why would they come to our world? They've probably got everything they want!"
Why does a human want to explore the ocean? Why does a human want to explore space? Curiosity. Maybe they want to see it for themselves instead of looking at pictures that their friends posted on Spacebook. Maybe we're small and adorable to them. There are plenty of reasons why they might check our world out that don't involve conquest, genocide, slavery or other symptoms of rampant capitalism and authoritarianism.
