Is this consider as selling marijuana or transporting it?

Alright I'm a junior in highschool I want to become a cop when I grow I plan on going to college to study criminal justice. When I was in my sophomore year I did some stupid stuff. I bought some weed and that's when I decided to quit but I still had 4 grams so I decided to give it away and it was only once that a person gave me $5 for it. So I just took it in my local police website it says " Sales/Manufacturing/Growing/Transportati… of illegal or prescription drugs " should I give up or is what I did something else? Please help I don't want to give up in my dream.

P.S I did think of selling it once but I didn't this guy I gave some to he sold it

I think it would be selling but never give up your dream my sister did what u did now she a teacher. But I am only 14 but am pretty smart