How to download individual PDF report from my submissions?

I would like to download each individual contract as a PDF as my clients send them back to me but I noticed that when I download them, it had every client's contract in that PDF file, is there not a way to have them all kept individually?

As I can understand, you need to download individual PDF reports from your submissions. It seems like you tried with the "PDF" button on the submissions page: 

Do note that this will generate multiple PDF files and 20 submissions will be included in this PDFs. If you would like to download individual PDF files per submission you will need to go to the submissions page and click on the PDF button -> Download PDF: 

Hope this helps.