Q: mac pro

Google translate:

Hello everyone, I want to know if the program is valid tuneupmymac ..? that is, if it's Mac or I was installed by the person who sold me the pc ... thanks for the help

Cleaning and tune-up apps like that are not needed and frequently slow up your Mac and cause other problems.

Also you should do this now since it should have been done by the seller:

What to do before selling or giving away your Mac - Apple Support

You want to start with a clean install, with nothing from the previous owner.