You should write your thesis statement based on one main idea. It has to be AMBIGUITY FREE thesis statement because an ambiguous thesis statement is highly likely to fail your all efforts. You have to write it in accordance with your examples and evidence you would use in your thesis.
A good way to find new ideas is to read free thesis statement examples. Search on the Internet and find samples related to your research interest. However, remember that you cannot simply use the statement you found.
Free Examples Thesis Statements
I definitely recommend you pick up my FREE thesis statement writing guide. It will help walk you through how to build a thesis statement from that topic. You can get it by putting your email address into the box at the bottom right corner of this page. I made this guide for students just like you!