I've taken about every precaution I know of to prevent tracking, yet CCleaner finds and clears TONS everytime I run it... Edge, Adw Blocker, Strict etc.
WHY?
It all depends what you think the word 'Tracker' is refering to, and in this case I suspect it isn't what you think.
What Health Check is finding are simply cookies.
There are many types of 'cookie', generally they fit into two main types - either an 'Authentication cookie' or a 'Tracking cookie' - and that is what Health Check is reporting it's found to clear.
See here for a fuller explanation:
you could set your browsers to block third-party cookies.