While version 21.0.3.91 is an older build of Photoshop 2020, seeking "pre-activated" or "cracked" versions from third-party sites carries significant risks: Photoshop 2020 how to install/update - Adobe Community

Using pre-activated software constitutes copyright infringement. While Adobe rarely sues individuals, they actively block unauthorized versions via background telemetry. If you are a freelancer working with commercial clients, getting caught with pirated software can ruin your professional reputation.

to Photoshop that offer similar professional features without the subscription cost?

: Many users found their "pre-activated" versions unstable, leading to the dreaded "BSOD" (Blue Screen of Death) during heavy renders. Security Risks

While the allure of a "pre-activated" or "latest hot" version is high, it is important to remember the risks: