Since you're looking for a portable software download, here are some considerations:
Adobe has a standalone version of Lightroom labeled as "Portable" for Mac or Windows. Websites offering a "portable software download" for MacBook Pro are typically distributing hacked versions designed to bypass licensing. Risks of unofficial portable downloads: adobe lightroom for macbook pro portable software download.
These files may contain malware, spyware, or keyloggers that can compromise your banking and personal data. Since you're looking for a portable software download,
However, Adobe has addressed the need for mobility in a different way. The Adobe Creative Cloud desktop application allows users to install the legitimate version of Lightroom on multiple machines. While it requires an internet connection for license validation, it fulfills the "portable" lifestyle need by allowing a photographer to sync their catalog and access their editing environment on any machine where they are logged in. This represents the modern evolution of portability—moving away from carrying a USB drive to carrying a digital identity in the cloud. However, Adobe has addressed the need for mobility