Forget someone else’s nonsense “proof”

You can prove the globe wrong yourself without special equipment

Do you live near a large body of water? You can still do this over land but I would then encourage you to do this experiment in a few different locations to rule out the possibility of your land samples all being coincidentally flat

Ideally, you stand on a shoreline and scan up the coast or directly across the water if possible and spot the most distant object/landmark

On a clear day you should likely be able to see over 20/25 kms with your naked eye. Bring binoculars to go much further and give yourself zero room for doubt.

Pay attention to what you’re seeing. Notice that you not only see the entire landmark but also even the ground and shoreline running up to it

Then hit google maps and right click your location, measure distance, right click again on your distant landmark(s) and measure distance

Enter that distance into an earth curvature calculator

Earthcurvature.com

Why can you still see 100% of that distant object that should be completely obscured from view due to earths supposed curvature?