I feel like regretting how much time I'm about to waste so fuck it...
Here is the problem - your education level in science is what, 4th grade, maybe 5th grade? You don't even have a high school level understanding of any basic science, so of course the "magic" of satellites doesn't make any sense to you. And if it doesn't make any sense to you then the door is open for it not being real and/or conspiracy theory.
"Just point your thingimijigs towards the other doodad and see if the doohickey brings back thingamabob, it's not hard lmao". This is what you might as well be saying right now because all those words lack any meaning to you.
Putting that aside, there is something in science called the "Scientific Method." Simply put it's a way to research, collect data, draw a hypothesis and conduct experiments to confirm or reject the hypothesis. There is also what is called scientific theory, which means something that can be repeatedly tested, using a predefined protocol of observations and experiments. Basically it must stand the test of time and can be confirmed or rejected by anyone. All it would take is one person in the scientific community (or even outside) to disprove the earth is round and they would instantly become one of the most important persons in our history. But not one person had. Not a single person has used the methods above to disprove anything, despite these people on the internet who say they have proof. Well, since you and "flat-mates" are making the claim, why hasn't anyone proven or St least came clode? Shouldn't be that hard...
The whole conspiracy by NASA/US government is ridiculous to think about- that all of these years, millions of people would have to be in on the conspiracy and keeping their secret. People in the Trump Adminstration can't go a week without leaking information, so imagine over the course of he past 50 years (first person in space and orbited earth (Yuri Gagarin, USSR)) how difficult it would be to keep such a massive secret (a global secret nonetheless). And to what end? You're saying the GPS is a lie, that it's rigged. That satilites are not real in the way we believe and countless other things would have to be make. That goes way beyond NASA and the US government and even foreign governments, it's big business, small business and single business owners, all would have to be in on it. Amazing.
Our planet can be proven as being round in many, many different ways. Let me guess, you weren't tyst great in Math were you? You see, we've never needed to go to space to determine the Earth is round, observation and mathematics can prove it as welll. Just look into history (another wild guess - didn't do great in history either?).
Remember, this isn't some new idea- the Ancient Greeks for example, numerous mathematicians around 500 B.C. came up with the idea the Earth was round, and later Aristotle declared Earth was a sphere based on observations he made about which constellations you could see in the sky as you travelled further away from the equator. About a hundred years or so after, there was Aristarchus and Eratosthenes who actually measured the size of the Earth!
"Eratosthenes calculated the circumference of the Earth without leaving Egypt. He knew that at local noon on the summer solstice in Syene (modern Aswan, Egypt), the Sun was directly overhead. ... He measured the Sun's angle of elevation at noon on the same day in Alexandria." You can read the details on exactly how he did it here:
Eratosthenes' Calculation of Earth's Circumference
He was supposedly oy off by 1%.Not bad!
We can go on and on but like I said, it all boils down to your lack of education. Somewhere along the lines your parents, the education system and society failed you. It's sad you fell through the cracks homie and were left to fend for yourself working at a cafeteria with no proper education, but that's capitalism for you man.