In much of scientific research, the goal is not to reveal the ultimate truth about the reality or even of the phenomena that are studied. Much of the work is aiming towards a practical goal: explain what is observed so well that we can predict what will happen and utilise that knowledge for applied purposes or the needs of the other research.
If you can explain how something works and make accurate predictions about what will happen if something changes in the system, that is sufficient knowledge for any purposes of the practical life. Questions about the ultimate truth, the ultimate nature of reality, ontology in the deep sense, or comparable questions are ‘nice to know’ knowledge that is not essential for practical life.
Sometimes the goalposts for the practical needs change, like when the Newtonian physics was not anymore sufficient for practical needs. Even in these cases, the advances can be seen as driven more by the practical needs than an attempt to reveal the ultimate truth about the reality. That is true at least for the funding of such research or the institutional goals - individual researchers may have more ambitious personal goals.