Issue with adobe premiere

I use professionally adode premeire cs6 on my macbookpro 2013 with mojave as a operating system. the software at the end of each session after saving freezes. I did some research and it could be that mojave is not compatible to the premierepro cs6 that might be to old. Therefore it might be wise, if possbile to reinstal an older operating system in odrer to solve this issue.

If this is possible I will appreciate to be inform about it and how to do this.

Thank you