Here is the scenario. Created a New install with Softaculous, then go to the website, it works! but when you try to go to wp-admin you get the 'TOO MANY REDIRECTS ERROR'
I tried several known corrections for 'TOO MANY REDIRECTS ERROR' but they didn't work until I stumbled on this code on Stackexchange.com
Try this code in the wp-config file
if (strpos($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') !== false) $_SERVER['HTTPS']='on'; else $_SERVER['HTTPS']='off';If you find anything else about this issue please append research to this document.
1A. FOUND THE PROBLEM! (5 MINUTES AFTER WRITING THE ABOVE) LOL
If using Cloudflare you need to set SSL/TLS to full, the two case websites were set to 'flexible'. After you make this change you will not need the code above!