Humans have known the earth was a globe for 2000 years before NASA or media existed. Yes, a few hours of research is all you need to know the earth is provably 'not' flat. Actually, just a few minutes is all you need.

Just put a phone app on your phone, go to a tall building or a high hill and you can see the horizon drop. Impossible on a flat earth.

Don't trust technology? Make a leveling rig. Same outcome. Horizon always drops.

You can go 'research' nonsense from high school dropouts who tell you how you are so special for having overturned 2000 years of scientific inquiry just by watching their video, or you can make a few simple observations like I outline in my articles and observe reality. I'm sorry, but the earth is not flat, and nasa had zero to do with us knowing it's a sphere.

Use a Solar Filter to Defeat the Whole Flat Earth Argument

Proving the Curvature of the Earth With Nothing But a Ladder