Apple Support can sometimes provide a download link if you have proof of purchase for a Mac that shipped with Lion and you never received the installer. Results vary.
To address your request, it is crucial to highlight that the "OpenSea" collection for downloading Mac OS X Lion 10.7.5 is likely a or a phishing attempt . OpenSea is a marketplace for Non-Fungible Tokens (NFTs), not a software distribution platform. Apple Support can sometimes provide a download link
If a trusted friend has a genuine InstallMacOSX.dmg (obtained from the App Store), you can: Apple Support can sometimes provide a download link