As others have commented, the key to graduate schemes is to find out where you are going wrong in your applications, and improving it. You've stated that you're not getting past the CV upload part. Have you tried using free CV checkers online and improving it, so it stands out more? Does it use passive language or impactful language? Are your cover letters tailored to the description of the role? It's things like this that really make the difference.
You have a great predicted grade, PLUS experience... so there's no reason you shouldn't be progressing through your applications - you're a good candidate! Keep applying!