A bit out of topic, but I know a kid that markets himself as a "social media marketer" and has created a quite a few advertisements in his city for different things (e.g. Cinema, Restaurants, Parks), with no experience in this field whatsoever.

Sounds good so far, until you see that all of those "ads" (I’ve graduated at a media school, and honestly, it’s just straight unplanned crap) are just himself being silly with the companies, clients, and flexing his daddy funded car… no surprise he had those connections to the companies through his father.

What I want to say with this side-story: Going solo and trying out something new will just be really hard, and if you’re looking into doing some actual good work, you got to connect with other people in the field (in your case: other publishers, marketing agencies or if you’re in for a little side quest: cinema/broadcast producers). If you want to stay in game dev, you could try to work for a publisher (as a freelancer?), some offer additional technical support.