Sellers, advertise here.
Yep - that’s what the whole category’s for.
It is all explained here: Forum Rules + Do's and Dont's
Edit: Just looked at your account and see that you are asking buyers to contact you via your email account. Off Fiverr contact is against the Terms of Service which you will find at the bottom of the Fiverr main page.
“I can help with a school presentation assignments, guaranteed a good grade”
The above (copied from your gig description) is also against the Terms of Service as helping with school work is not allowed. Your gig is likely to be removed at any time.