How do I transfer my Microsoft account (Fortnite) to Epic games so that Microsoft is no longer necessary to sign in?

I would like to know if any of you know how to transfer your Microsoft account (Fortnite) to Epic games so that I can log in without my Microsoft account. Of course my Microsoft account shouldn't be deleted or anything like that, but I would like to be able to continue using the Fortnite data, or generally the account with only Epic games, as if I were to log in on another device without all of the Microsoft data.

I thank you in advance.

I haven't found any information on this subject on Google or in the Epic FAQ.

Okay thank you very much.

But what happens if I connect this account to my current account? Then maybe an account is lost?

So connect to my psn acc, xbox account. That would be 2 different accounts with different skins.