I'm not sure what the job market is like in Europe, but in the US it's the worst job market I've seen since the dotcom bust. The job market isn't worse than the Dotcom bust but it's worse than the Financial crisis for sure. I wouldn't freak out just yet, however, I would also dedicate a lot more effort to learn whatever stack and language that is more popular in your area. Sticking with C and waiting for the right job to appear isn't a good idea. Also, there's no shame in lying on your resume to show some experience in whatever language you are looking to transition to, like golang. As long as you can walk the walk, ultimately that's all that matters.