I am in the 99th percentile. Top 1% on the laughable MENSA entry test, SATs, best IQ test was 167.
The Earth is an oblate spheroid rotating at an angular velocity of 15 degrees per hour. 23.5 degree axial tilt, which gives us seasons along with procession like a spinning top. The seasons alone disprove flat Earth.
On a flat Earth, for summer/winter to occur, the sun (which they claim is a magically floating spotlight) would have to increase/decrease the diameter of its "orbit" for half the year in order to cover more sky on one side of the equator and less sky on the other side. For this to happen, it would have to speed up or slow down to cover the same distance in 24 hours. Thus we have yet another flat Earth debunk.
Also, on airplanes it is possible to see the sunset appearing below the plane's altitude while flying above the clouds. You can watch it disappear behind the horizon. But flat Earthers claim their sun is at 4,000 miles altitude. Since no airplane has ever been directly above the sun, we can conclude that planes cannot go above the sun, and since it literally touches the horizon from the POV of a plane cruising at ~35k feet, we know it's not at 4,000 miles altitude, AND since planes cannot fly OVER the sun and have it be directly below the plane... That's a wrap on flat Earth.
I would destroy Bryce or any flat Earther in any debate about any topic.