you’ve got to make your request specific. If your request is vague, the FOIA team will ignore.
at minimum, make a request to have a complete copy of your alien file to the USCIS. if they still refuse, you have an option to sue at district court for an invalid refusal.
But fist of all, you have to go after your lying lawyer. Report to the state bar where the lawyer’s barred and file a complaint, that is free. Follow through so that the lawyer loses his/her license. The rest of the lawyers will be very happy, one fewer competition.