For those strictly needing the 2019 version for compatibility, you can sometimes find legacy installers through the Adobe Creative Cloud desktop app's "Other Versions" section, provided you have an active subscription.
Intel® Core 2 or AMD Athlon® 64 processor; 2 GHz or faster. adobe photoshop cc 2019 v2001 preactivated link
3.1 GB or more of available hard-disk space for 64-bit installation. For those strictly needing the 2019 version for