Helphow to clean computer fully

well i use a vpn and cc cleaner. but sometimes google still knows my location and other websites like hulu etc. how can i clean my computer 100% so there no trace left. i do not want to purge obviously this will delete every single thing. but i do want to clean up all the unwanted stuff and permanently delete even so computer forensics can't find. im using old mac 2010-2011 old operating system due to a shitty third party harddrive replacement so i cant even update to the latest browsers. anyone that is very knowledgable in this please reply i would be grateful

This isn't really related to malware...

/Moved to the correct section.

Use Tails.

Use GParted.

i heard that vpn won't work. Google still collect your own ip. Anyone confirm?

yes google does collect ip

Your dns could be leaking.

Also don't sign into your google account if that wasn't obvious already

People tracing your IP has nothing to do with your computer. You probably have a weak encryption or weak VPN if they can still see your original IP address through it. Get a better VPN, and you should be good. ALSO, try to do things in incongnito or private mode.

Use CCcleaner

If this problem still persists, and you are actually concerned about your own security leaking from your computer, I would recommend using DBan and wiping your whole computer, save the important stuff, though!

is ccleaner good for wiping free space of computer?