You will almost never find the legitimate, complete Lovin’ Sans family for free. Why? Because McDonald’s pays millions of dollars in licensing fees to keep this font exclusive. Distributing it without permission is software piracy, and foundries actively issue DMCA takedowns for these files.

Some font sharing sites (like Dafont, FontSpace, or random GitHub repos) have fan-made recreations named "Lovin Sans" or "McDonald Lovin". – they're unauthorized derivatives.