You can still download old versions for free from the official website.
To download the free 32-bit version, you must use the official Unity Download Archive Navigate to the Archive: Unity Download Archive Select the Right Tab: Click on the Choose Version 5.6.7: Find version (released in 2019) in the list. Download the Installer: dropdown for that version. Unity Editor 32-bit for Windows. Unity 3d 32 Bit Download Free
Run the downloaded installer. During setup, you may be asked to choose components; the core editor and any necessary build supports (like Android or WebGL) are usually sufficient. Key Considerations Performance Limits: 32-bit systems can only address up to 4GB of RAM You can still download old versions for free
While the Hub defaults to modern versions, you can sometimes link older, manually installed versions to the Hub to manage your licenses and projects easily. System Requirements for Legacy Unity Unity Editor 32-bit for Windows
Older versions do not receive security updates or technical support from Unity Technologies. Alternatives to 32-Bit Unity
If you are using an older 32-bit machine, consider these optimization tips from to keep the editor running smoothly Use the Universal Render Pipeline (URP) : It is much more efficient for low-end hardware. Bake Your Lights
Older Personal licenses do not feature the aggressive online check-ins found in newer Hub-centric versions.