RE: 3D Printing is harder than it looks!

Don't use a raft, that model has no need for a raft, in fact 99% of prints you don't need to use a raft.

A brim with a 0.1 - 0.16 gap is a much better choice if you are having adhesion problems, but you shouldn't even need that for this print, the entire print is on the bed surface.

That looks like a textured PEI sheet, a good clean with soap/water should help a lot with adhesion, just try to avoid putting your fingers on the surface.

There is a good chance you need to raise the bed temperature if you are having problems with adhesion, PEI likes to have some heat so it melts a little and it creates a good bond. Typically 60-65C for PLA and 60-70C for PETG.