((I respect your opinion and stuff but here is my proof that gravity exists with basic physics that my brother showed me))
Here’s some basic physics for you.
If the Earth is flat, then to cause an object, dropped above the ground, to accelerate towards the ground at 9.81 m/s squared (the acceleration value due to gravity) the Earth would have to constantly be accelerating at 9.81 m/s squared. Using the velocity equation v=u + at, where ‘v’ is the final velocity (m/s), ‘u’ is the initial velocity (m/s), ‘a’ is the acceleration (m/s squared) and t is the time (seconds) you can find the current speed the Earth must be travelling at for the flat Earth theory to be true. ‘v’ is the variable we’re looking for, u would be 0 m/s because the Earth hadn’t started accelerating yet, ‘a’ is 9.81 m/s squared and ‘t’ is the age of the Earth (4.543 billion years) converted into seconds, which is 143,268,048,000,000,000 seconds (1.43268048 x 10 to the 17th seconds). Therefore, the current speed of the Earth (roughly) is 0 + 9.81 x 143,268,048,000,000,000, which is 1,405,459,551,000,000,000 m/s (1.405459551 x 10 to the 18th m/s). This means that the current speed of the Earth (according to the flat Earth theory) is 4,688,108,434 time faster than the speed of light (299,792,458 m/s), meaning that we would be unable to see, if we exceed light speed, because light’s speed is constant and light therefore cannot go faster or slower so light wouldn’t be able to catch up to our eyes. This is of course assuming that we could exceed the speed of light, which, at least currently, is deemed to be impossible.