This forum system is not a direct link to Adobe support.
We are just users like you and can't help with account questions.
You need to contact Adobe directly through the Chat system at the link below.
Select the chat icon at the bottom right of the page to open a chat session.
Type in AGENT into the chat window to connect directly to a person rather than the AI System.
Once an Email Address has been used for an Adobe ID ( and IIRC any Online ID for logging into any type of website or to use any type of service or services. Banks what not) that same Email address can NOT be used again. If you remember the password for the Adobe ID that email address was used you can Log In using that email address and the correct password.
IMHO NO online account is ever really deleted. Maybe in 20 years when whatever company does a Full Clean Out of there systems, retaining only Active account a specific email address might become available again.
Also I have not looked aty your screen shot as you Attached it, Used the BIG Box at the bottom of the Create a Post page to Attach it instead of using the Insert Photos icon in the Tool bar for placing it in the body of the text of your post, Inline with the Text. Like these.
You should of used this.
But your Eyes were drawn to this.
That really isn't your fault, a lot of people do this.
It IS the fault of the people running this forum system.
So if you can Edit your post and remove the attachment and place that screen shot in line, in the body, of the text of your post.