You will have received the evidence that the prosecution intend to use, i.e. the officer’s statement. The prosecution isn’t obliged to disclose evidence to you, at this stage, that they do not intend to use; neither are they obliged to use any body cam evidence etc.
If you plead not guilty, the prosecution will review the evidence and will disclose to you anything that they intend to use, that undermines the prosecution case, or which supports your defence (assuming you’ve told them what it is). What other evidence there is that matches those criteria, who knows?
If you want anything else, you can ask for it but the prosecution don’t have to give it to you. In that case, you would have to convince the court that it ought to be given to you and make an application for a court order.