There are legitimate ways to get Lion 10.7.5, though they require patience.
Many “repack” links on forums are dead, lead to survey scams, or download into .exe files that are completely useless on a Mac.
Real example: A 2021 analysis of “Lion 10.7.5 ISO” torrents found that 1 in 3 contained a known OSX/Shlayer trojan variant. mac os x lion 107 5 iso download repack link
Many repacks include hidden scripts, keyloggers, cryptocurrency miners, or remote administration tools (RATs). Unlike Windows, macOS malware is less common, but vintage OS versions lack modern security features.
Retail copies of OS X Lion were also sold on USB thumb drives (July 2011). You can image that USB to obtain a valid BaseSystem.dmg. There are legitimate ways to get Lion 10
Lion 10.7.5 is not compatible with many modern applications. It was the last version of Mac OS X without the annual release cycle. Today, most software requires at least OS X 10.10 (Yosemite) or later.
Even if you don’t have a vintage Mac, you can run Lion 10.7.5 using: Real example: A 2021 analysis of “Lion 10
Performance note: Lion does not have native graphics acceleration in most VMs except on native Mac hardware with VMware Fusion.