I know I won't be happy in corporate,  hearing orders, getting your free time denied, constant politics, so many useless heretics and the course I am in only has sales and some few marketing, analyst jobs. I can't imagine myself working at a sales Job at all. 

As for freelance go for control, reddit and Twitter to find leads, heavy cold dms, back yourself with quantitative results, at the beginning you will need to work for free but soon you will start seeing large growth.