At tbis point I am not sure where you want to get to.
Yes, the holocaust didn't happen as prpagandised
Yes, the moon landing, 9/11, Covid, Climate, ...
We might very well live in a situation. But if you make strong claims you want scientific setups to verify or falsify your perspective.
So far the scientist in me has not seen any measurable proof.
You should start with defining different experiments.
For example measure the normal time span for sunset. What would you expect from sun becoming fully visible? Then jump in a plane head directly into the sunrise and do the measurement again. What would you expect for different models (globe vs flat).
Climb a mountain. Do line of sight calculation, distract atmospheric effects. Or again board a flight. Bring a good camera make photos of the horizon, take parallax effect of camera into account and observw/measure the curviture.
I don't like that people jump to every conspiracy theory today, especially since we know that some theories are explicitly spread to distract from real ones. That's part of theit strategy.
Also take into account that globe perspective was once a conspiracy theory. So which is it now?
I do not want you to throw your beliefs out the window. I want you to prove them like a real scientist.
For example the physics teacher that came up with a clever idea to prove free fall speeds (=controlled demolition) on 9/11.
He really opened the eyes for millions of people.