You are not providing any arguments, just asserting your beliefs. I am not believing the Earth is round because someone told me, but because I (and many others) can and have carried out our own experiments that proves it.

I currently work at the European Space Agency and have been involved in the space sector now for almost 6 years. I have been part of more satellite and ISS cargo launches than I can count. Every time, you I can watch the launch, see the trajectory and direction, observe the speed of the launch vehicle and its geo position, and observe how it connects to different ground stations around the world as it travels. You see, we have different ground stations scattered from close to the North pole at Svalbard, down to the south pole as well as all along the equator in order to have a continuous link with the launch vehicles during launch and the deployed satellites. I can then see how the signal is received at one ground stations as the vehicle gets within a certain range of it, and how it then later disappears after it has passed by, only to reappear after it has travelled the distance equivalent to an orbit. You can even do the math once you know both the altitude of the vehicle, and the distance at which it received a link with a given ground station, to calculate the curvature. This is undeniable proof of a round earth. How else could you fire a rocket in one direction and have it reappear over your head? How else would you explain why we need ground stations all around the world, and how they receive signals from a launched vehicle in the exact order, and at the exact times, you would predict based on assuming that the Earth is round and has a diameter and curvature that our models suggest? You can’t.

I can only suggest that you spend more time reading and educating yourself and less time watching conspiracy theories on YouTube. You’re far too young to let a bunch of jobless losers without a job in some poorly crafter YouTube videos influence your thinking to such an extreme extent.