Hey guys I'm new to flat earth theory. A little help please

I've have spend many hours researching A LOT of conspiracy theories, some I believe and some I don't. And a couple of days ago I came across Flat Earth. I haven't done enough research to decide if I believe it or not. But I gotta say a lot of the Flat Earth stuff makes too much sense to let it go.
I only have 2 things I can't figure out or seem to find info on and that's what I'm hoping you guys can help me with

1. How can boats travel quickly between Russia and Alaska? 2. There are flights from the US west coast to Japan ect over the Pacific Ocean? How is this possible on a Flat Earth?
Thanks
PS. Sorry if my English is bad