"My Mac uses an Intel i5 processor and it doesn't support version 26. Version 24 and 25 are not showing up in my Creative Cloud app. Please provide me with a direct installation package for an older compatible version of Photoshop (like v24 or v23)."

Thank you for posting to this public discussion forum, ​@ROP10.

I am showing that your subscription and account are managed by an organization. Please contact your organization’s Creative Cloud plan administrator for the necessary files.

For more information on downloading older version Adobe software titles, see 

actually, the wayback archive links to genuine copies, but is difficult to use https://web.archive.org/

Only the latest and one prior version is supported by Adobe. You can try and contact Adobe Support and see if they can provide you with a link. Other than that there are no genuine sources of old installers