It depends on your motives. Don't you think others would have questioned this over the last few thousand years? I don't know the full details, but I did experiments at school to measure electromagnetic forces, gravity and the speed of light. There will be loads of other articles and videos with more details on solar geometry. Google will provide.

People do not just take these things on trust. The scientific method you dismiss is about reproducing results. If anyone could disprove a major theory it would be big news. Gravity is a really robust one and is used every day by all sorts of people.

In recent decades we have sent probes out around the solar system and some go relatively close to the Sun. Maybe you don't believe in those, but many thousands of people would need to be in on the conspiracy.

Scepticism is good, but you have to decide what counts as evidence. Opinions do not.

Anyway you can live your whole life treating the Earth as flat unless you are doing actual science and engineering that would be affected. Why stress out about it? Most people don't care.