Can anyone tell me how to get my original birth certificate before adoption

Hi how do I get my original before adoption birth certificate

Do you know where you were born? In which county? Or country, if not the US?

If this is the US, and it was a closed adoption, you can not.

If this is the US and it was a open adoption you just go, or contact the county clerks office where you were born.

In most adoptions, everything is exactly the same on the birth certificate, except for the mother and father names, which are changed. The other info is the same

Another source is the adoption agency that placed you.