Trackers

CCCleaner does not clear all my trackers. It will say 15 trackers. I hit make better and it only cleans 3 of them.

That is normal behaviour for a modern operating system and modern browsers.

You clean them, they come back again emptied of old entries.

See this explanation of what 'trackers' actually are, and why some of them will come back straight after you have cleaned:

https://community.ccleaner.com/topic/52668-tracking-files/?tab=comments#comment-300043