What is truth though? You speak of it as if it's an absolute, definable thing, but in reality it's very much not. Truth is a relative term - we can both have truths that are in complete contradiction of each other, even within the realm of modern science.

Let's take a classic physics example - you're on a train, watching the world moving through the window. From your perspective you and the train appear stationary, while the world looks like it's moving beneath you. But from a person on the platform's perspective, they are the ones who are stationary while you and the train are the ones that are moving. If you drop something, from your perspective it moves straight downwards. But from the outsider's perspective, its trajectory is slanted - it's moving forwards as well as downwards.

Which of these perspectives is the "truth"? Is the train stationary, or the planet? Well, both - and simultaneously, neither. There is no absolute, definitive truth of the situation - it depends on whose perspective you take on the matter. And things get more confusing when you add more perspectives into the mix - after all as far as an observer on the moon is concerned, they are the one that is stationary while both the Earth and the train are moving. Or if you were to take the perspective of someone standing at the centre of the universe, then their truth is that everything is moving away from them. As such a definitive "truth" is impossible to define here. You can only state things from a particular perspective or - in physics language - a particular frame of reference.

This is why we don't use the concept of "truth" in science. Because while this is only a single example, this concept extends to basically everything. Science is not the "truth" nor does it ever attempt to be. Science is humanity's understanding of how the universe around us works from our particular perspective. Judging things as absolute truths or falsehoods is antithetical to this concept and therefore to science as a whole.