Do I correctly understand that you are referring to a Name page (where acting credits can be listed) versus a user login account profile page?
Name page is located at a URL that has the word "name" in it. The user
account profile page is located at a different URL that has the word
"user" in it.)
When people search for your name on IMDb, they will find the Name page (not the user account profile page). Try it:
Type your name into the IMDb.com search box, and press the Enter key.
Probably the first search result will show your name. Click that search
result and you will see the Name page.
The Name page and the user account profile page serve
different purposes. They cannot be merged; they always remain