I've gone through moments of doubt regarding flat earth.

In those moments, I would go over some arguments for the globe, and in hearing myself sound normie-level-retarded, I became more and more confident in knowing the world is as we see it, and not as [they] tell us.

Put our cosmology through the "science" v "pseudoscience" checklist.
Does the result mean ANYTHING to you?
Do u understand HOW heliocentrism came to be "accepted" to begin with? And by whom?
Maybe you want to do some research?