Privacy

I used Iphone 11.I sold this phone about 6 months ago.Now I am worried that I didn’t give a factory reset to my phone.So,There were some important documents in photos which wasn’t connected with icloud of my apple id.I signed out from my account but,I didn’t give any factory reset.I just did the reset thing which Didn't clean any media files.

Now,can anyone help me what should I do now?documents in my photos are very important to me.I Don't want to share with others.

Deleting my apple id will clean all the documents from old device iphone 11?or what should I do?

Can anyone help me???