When I look at your profile, I see ten cards listed. Are those the cards you are looking for? If they are, you have them listed as "for sale/trade" you should move them to "wanted".
The cards on this site are not for sale. It is just a massive list if as many cards as we can catalog. More are being added daily. If you want to add them to your own collection you can look at the little numbers under the picture of the card and see who has added then to "for sale/trade". Reach out to those people and see what you can work out.
Read the FAQ section at the bottom of the homepage to answer most questions.
I'm mostly organizing over adding right now.