Cannot install Audition on my pc

The published minimum spec is old - doesn't go beyond last year. There's only one significant thing that has altered though, and that's the reuqirement for AVX2 instruction set processing. Now, I checked and your processor should run AVX2 - but if's possible that you may have to set it up in the BIOS, or even update the BIOS for it to work. So, it's worth checking that out and persevering. I wasn't so lucky, and ended up having to replace an entire machine before I could get the latest Audition releases to work. The AVX2 issue is made quite explicit on the Premiere minimum requirements page, but despite it also appearing to be the case for Audition, it hasn't made it onto the minimum requirements page yet.