The earth is a sphere, we have been in space, we have been to the moon, we have sent probes to far away planets also spheres. We can observe our own planets shape through the aide of the satellites which orbit it. There is no scientific basis for flat earth theories. There is no logical basis for flat earth theories.

I am not discouraging anyone from belief in what ever they wish. Much like topics of religion or politics, it is not my place to tell someone what to believe or not to believe. Flat earth theories are grounded in faith, as there is no scientific evidence to support them. Believe what you wish my friend! Have a great day too.