Got some questions

Hello everyone, before asking my questions I have to say that I believe the earth looks round but actually has a bit different shape but I' very open to other theories. I don't mean to offend anyone by my questions or anything, I'm just curious. I'm also asking because I want to understand this theory better.

Now the questions:
What made you believe the earth is flat?
How do you think the other planets look (if there are some)?
Why the earth isn't round in your opinion?
Are there any researchers confirming the possibility of the earth actually being flat?
Why would the government want us to think the earth is round while it's not?

I'm open to discussion.