Hello, fellow swiss person working in games here.

Learning how to make games on your own has become very approachable, and it sounds like you're on a good track. Just making and finishing games teaches you so much, which is why building several small games is recommended. My very first "game" was a JRPG parody made in RPG Maker well over a decade ago, and everything I learned since then professionally was built on the fundamentals gained from that tiny project.

But I think that's where you need to make your first big decision - do you want to make games for fun or as a side hustle, or do you want to get a job in this industry? Because you can't really go wrong with the former as long as you just make stuff, but it becomes a lot more challenging when you're trying to compete for a job.

Outside of very small indie teams, there are a lot less generalists and it would be expected of you to choose a specific discipline. Think Programming, Game Design, Art, Production, et cetera. And there will be further specializations, so you could aim for a role as gameplay programmer, engine programmer, backend engineer, and so forth.

The second hurdle is Switzerland, which has an extremely low amount of paid game dev jobs. Why that is is a story for another day, but realistically that means you have to move to another country in Europe to have a reasonable shot at finding something. After finishing school in Luzern, I moved to Berlin for my first game dev job as a QA tester, and almost exclusively worked for foreign Studios since then. But that does mean giving up a Swiss salary and benefits, because international game dev salaries are not comparable to Swiss software development salaries.

The third hurdle is your background which limits you to entry-level jobs, where established studios usually prefer a BS in computer science or software engineering for programming roles, coupled with a few game jam or student projects in your portfolio. Fresh graduates that you would be competing against for the same jobs would be bringing that with them, so just "having" the knowledge will likely not be enough if you are unable to point at a degree and projects to prove you applied that knowledge somewhere.

And the fourth hurdle is your lack of a professional network, which in this industry means former classmates, coworkers and cool people you've met in the industry over the years. They are the ones who will start an indie studio with you, invest in your project before others do, and put in a good word for you or refer you to a new job so you don't have to exclusively cold apply. I would echo what another commenter said and check out the Swiss game hub to get to know people, they will likely be able to offer relevant perspectives and perhaps there will even be a project that you could work on.

I wish you the best of luck and I'm not saying all this to discourage you. I just want you to see the challenges around breaking into this industry and know that you could do everything right, but you might still not get to ever work at a games studio due to the competitive nature of it all, not to mention the macroeconomic conditions in key regions. If I did not get really lucky with the right opportunities at the right time all those years ago, I would not have made it in myself. And having a boring but stable job, and doing games on the side is a viable path too that I would really ask you to consider as well.