not you as well. ffs. i'm really getting sick of explaining this to people but i'm going to copy/paste/edit my response to another flatearther here on steemit.

get on a boat and sail towards a lighthouse from about 30miles away. you can determine the exact distance at which the light will become visible using an equation based on the pythagorean theorem, which takes into account the height of the light above sea level, the height of your eyes above sea level, and the curvature of the SPHERICAL earth. when you get to this calculated distance from the lighthouse the light will pop into view. before you get close enough you can often see the beam of light reflected from any mist/fog/clouds as it sweeps around. only when you get to the distance denoted by the equation will the light itself come into view. THE CURVATURE OF THE EARTH BLOCKS IT FROM YOUR SIGHT. you live on a ball.

you can experience the curvature first hand by getting out on the sea. it isn't a disc.

another proof is radio waves. radio waves travel in straight lines as does light, both being forms of EM radiation. a handheld 2way VHF radio used on a small yacht will not be able to communicate with another boat if it is more than 4 or 5 miles away because the horizon blocks the line of sight between the transmitting and receiving radios. no matter how much power you pump into the transmitter the other boat will remain out of range. UNLESS you raise the antenna to a higher position, thus increasing the distance to the visible horizon, and so bringing the receiving radio into a clear line of sight that is not blocked by the CURVED EARTH.