Older Premiere Pro MacOS 10.14.6

Hello!

I am new to using Premiere Pro and would like to download the app to my Mac. The only problem, I have the older system software. I was wondering if an older version of Premiere Pro is still available to download to my Mac. I understand that updating my system is the best way to go but I don't have the storage 😞

If anyone has some technical advice to get around the storage issue that would be super!

Thank you kindly,

Sam