Lightroom 6 installation

On a modern computer with Catalina, Big Sur, Monterey or Ventura, you need modern software. 

Creative Cloud Photography Plan (approx $10/month for 12 months). Includes the following:

• Photoshop CC and Photoshop on iPad
• Camera Raw
• Lightroom on desktop, mobile and the web
• Lightroom Classic (similar to LR 6)
• Portfolio website + hosting
• Adobe Express (free starter plan)
• Bridge
• 20 GB cloud storage (upgradable to 1 TB).
• Free upgrades for paid subscribers

https://www.adobe.com/creativecloud/photography.html

Hope that helps.

A new iMac won't be able to run a system that can run Lightroom 6. You needed to buy an old one. What do you have?

@sabrinat58100726 

you need an os that supports 32 bit and 64 bit programs because lr6 has both, 

then, if you confirm your default browser support tls 1.2:

start here - https://helpx.adobe.com/manage-account/kb/stop-creative-cloud-trial-mode-after-purchase.html

if that fails, proceed to these steps - https://helpx.adobe.com/enterprise/kb/resolve-trial-and-license-expired-errors.html

if that fails, https://helpx.adobe.com/download-install/kb/adobe-license-issues-keychain-credential-mgr.html

below are solutions some users reported:

if those all fail, change your cc language. eg, try international english - https://helpx.adobe.com/creative-cloud/kb/creative-cloud-trial-mode.html

if that fails, change the install location

Which operating system are you running?

TLS 1.2 is now required to connect https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html

-test your browser https://clienttest.ssllabs.com:8443/ssltest/viewMyClient.html
-http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html
-https://helpx.adobe.com/download-install/kb/unable-to-reach-adobe-servers.html