No, your system needs to meet the minimum software and hardware requirements. Upgrading the OS is the only option you have as far as i know, or else keep using CC2018 that is compatible with Win 8.1 i suppose
Adobe are dropping Windows 7 support too. Don't expect any future versions to work with it even though it currently has around 20% market share. How can a company support software on an unsupported system?
For Windows 8, clearly Adobe are not interested in a system with 5% market share.
It's the usual story: if you want to freeze your system, freeze your apps. If you want to freeze your apps, freeze your system.