If you unironically have fallen for the flat earth CIA psyop, there is one easy experiment you can do to prove yourselves wrong.
Step 1: buy GPS enabled go-pro
Step 2: buy high altitude capable balloon
Combine the two, watch the balloon go up, track where it lands, watch the footage for yourself and free yourself from Mockingbird bondage.
For a little extra, you can configure a live feed system and watch everything in real time all under your control! Yes, it really is that simple!!!
Bosh. Computer-generated imagery wasn't a thing until the late 1970s, and pretty primitive then. Plenty of photographs of the Earth from the Apollo program and predecessors. I have a big strip photo of the Earth taken from the Lunar Orbiter probe in 1966. Nothing is up for debate. You are going down the paranoia rabbit hole, which is a serious psychological malfunction.