Short answer to your main question: yes.
What you're saying, I've read dozens of times over the years. The harsh truth is that the video game market has been oversaturated for a long time, and making a quality game isn't enough. You need a marketing strategy that gives your game visibility to potential buyers and an understanding of the market or niche you want to enter (and even then, there are no guarantees).
Some people have built a community over years and, thanks to platforms like Patreon, are able to make a living developing games.
Others look for a publisher or pay for advertising, and if they have a visually appealing product, they manage to position themselves and sell well.
A few are lucky enough to have their games become well-known.
But the vast majority don't get more than a few hundred or, if they're lucky, a thousand downloads.
Trying to make a living from this without knowledge or a community is too risky, and it would be best to continue working a stable job that allows you to live comfortably and dedicate yourself to creating games in your free time. If you are consistent, it is possible that you will build a community that allows you to quit your job and live off this, but it is highly recommended that you only make that leap when you are already on solid ground.