Getting a job is not the end of your creativity. lol
I work as a web designer full-time and then I go home and work on my comic series and other art projects. I mean, it would be cool to work on my comic all the time, but I have to be able to pay rent, bills, insurance, food, clothes, put money aside for a rainy day, etc.
I have a very creative job and I honestly love it. I love my comic more, but with that job, I live comfortably, still very happy and do what I love on my personal time.
Even though social media is the key for most to get noticed, I actually am more known locally. Because I'm part of my local art community and have been doing the face to face networking for over a decade. I'm more invisible online, because there's just so many people that you easily get lost.
I do post online, even if I'm not on all the platforms, because promoting online is extremely time consuming and I'd like to have time to write and draw. So, I've limtied myself to ArtStation, Instagram, Facebook (but less now), Deviantart (but less now), Tapas (online comic/forums) & Webtoon. In real life, I do conventions, expos & festivals. I also now have the comic on the shelves of 2 comic book stores in two different cities and in an art gallery in a town I know, an art gallery? It oddly is my hot spot for sales. Because it's part of a Art Gallery Tour, so when tourist season starts, tons of people come by to buy local creations. It kinda promotes itself in there, which is fantastic and people grab my business card as the same time!
But, posting work in progress sketches, videos, sneak peeks online, helps a lot. I find I get more hits on Instagram and I've started posting on Artstation. Which is great, because I can post sketches along with my final piece. I love seeing the work behind a piece from artists, so I'd definitely suggest doing that.
There's no such thing as being too old to create and having a job, doesn't mean you give up on your dreams either. I've worked odd jobs to support myself, while looking for something in the art industry and still continuing creating art on my personal time.
My pipe dream was to create my comic and sell it in comic book stores. I'm not a comic book artist full-time, but I still managed to make that a reality.