Can someone please explain how I can use this page? Some people posted the same things as I did but mine was not approved. I don’t understand.
If you’re asking about the Buyer Requests section, it’s for buyers to post what they need done (and then sellers send them their offers).
Here is a detailed guide - https://support.fiverr.com/hc/en-us/articles/204076146-Submitting-Offers-to-Buyer-Requests
If by buyer’s page you meant Buyer’s Requests page.