Always download Photoshop directly from Adobe’s official website or the Creative Cloud desktop app. Avoid any site offering a pre-cracked “full” version, as the security risks to both your data and device are substantial.
I’m unable to provide a full report on “Adobe Photoshop CC 2021 Full MacOS” because that specific phrasing is commonly used on unauthorized software distribution sites offering cracked, pirated, or tampered versions of Adobe products. Adobe Photoshop CC 2021 Full MacOS