outline and thesis statement about facebook harmfull and most clicked

i will write an assay about facebook harmfull but i don t know how write:( this is first essay and will be my passing score. i need an outline and thesis statement. topic is about facebook . my thesis statement:

Despite the harm Facebook inflicts on society, it is the most frequently used site...is this a thesis statement? how can i continue that?answer can be short sentences thank you...

If you're writing about Facebooks harmfulness maybe have a thesis more along the lines of
"Although Facebook may be the most used site in our society today, it can be a very dangerous and harmful place." or something like this. for the outline:

just present your points. Make an introductory paragraph, then presents point 1 of why its dangerous (maybe cyber bullying). then point 2, then last point, then closing paragraph.