Hi Ehab8,
welcome to the Apple (user-to-user) Community!
Re: I created an Apple ID and I’ve been using as a normal email to sent and receive but just now after I been reading some details about it I find out that I shouldn’t and I don’t know what to do please advise
It is not easy to understand just what you need:
Seems it is quite ok to use a normal third-party eMail address (eg: yahoo / gmail etc. etc.) as your Apple ID, as many of us do.
If you want you can: Change your Apple ID - Apple Support
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Else: If you use iCloud Mail ... It is ok to Create a primary email address for iCloud Mail - Apple Support
or
there is an option to use an existing domain, or to use a custom email domain
Also more info: About your @icloud.com, @me.com, and @mac.com email addresses - Apple Support
Hope there's something helpful to you here :-)