How do I deal with only being noticed when things break?

You hold up the whole thing. When it runs, no one thinks about you. When it breaks, suddenly everyone knows your name. After years of that, it is fair to be tired of a job where mastery is measured only by the disasters that did not happen. That invisibility is real, and it stings. But look closely at what you actually did. Every quiet day was not luck; it was you, seeing the problem before it became one. The absence of disaster is not the absence of work. It is your work, so well done that it disappeared. Few people are good enough to be invisible in that way. Most create the fires. You prevent them. Since the world will not hand you the credit, take some of it yourself. Keep a simple log of what you caught and prevented, and share it plainly with your manager once in a while: here is what did not break, and why. That is not bragging. It is making the invisible visible. Start that log this week. Your steady hands deserve to be seen by at least a few people who matter.