I think the idea of a singlar truth is false.
In recent years the idea of multiple competing truths has been pushed a lot - significantly by Russian troll farms and other sources of disinformation to discredit others and blur the ability to identify truth.
I prefer to use the term 'in pursuit of the truth' in the full knowledge that its a bit like chasing rainbows and you will never find the pot of gold at the end of it, but you will have glimpses of it and you know the science of rainbows and can see a rainbow if conditions are right. In this way you know it to be completely real and unfabricated even though you can't touch it.
When I was a child I wanted to work for the BBC one day because I had this idealistic notion about chasing the truth. It didn't happen for various reasons but I still believe in the concept and I think my 15 year old self wanting to 'chase the essence of the truth' is the best way to explain the whole concept of truth. It's not about absolutism, it's about the principles you use to seek the truth in the fairest way and to eliminate bias and obvious falsehoods.
In this sense whilst the fog of war hides the truth in ways you don't see elsewhere due to the level of propaganda you have, war journalism can also be the rawest and purest form of truth because it shows the grimest of realities than no one wants to bear witness too and often admit. There has been some exceptional reporting in Ukraine along these lines. It's a paradox I've always found extraordinarily fascinating and compelling, and one of the reasons I find myself drawn to trying to understand what is really happening in a war for people living through it on the ground. I've seen war correspondents describe their work as addictive despite the trauma many end up suffering and I do think its an understandable point of view.
When you start to phrase it as the pursuit of truth, it allows room for error, but the principles which guide you remain consistent and unchanging and thats the foundation and important bit.
Science demonstrates this well. We have things which are undiscovered. X + Y = cure for cancer for Z% of people. It already exists but we have not found it yet. We need to research and follow principles to discover this. It is an imperfect cure because not everyone will benefit from it and it may have side effects (including the possibility that the cure itself might shorten your life, so may not be worth using, so you have to check this too!). The point is the discovery is a journey which is ever evolving and your understanding changes with each new piece of information you gather to build up a mosiac which is your overall image of a concept. It's not a photographic replica of the world, it's a representation of ideas. If you get it wrong or pick an explanation which does not cover the majority well, it's like the picture is blurred and distorted so your comprehension falls short. You need enough detail to be able to say its a fair and honest representation which accurately reflects the world but may not capture everything. (in which case you may need rules to explain exceptions). The value is then based on how well you represent ideas, concepts, feelings, fact etc which you will never fully be able to say 'this is the truth', you can only say 'this is the best understanding that we have based on the information we currently have available to us'.
I think its hard to get your head around, especially in a world of social media where there is a desire to distort to gain power over others or to over simplify where inappropriate to hide inconvenient details of truth.
All this shit about differences of opinion on what is the truth is a way to try to legitimise opinions and ideology over the unpinning principles of truth finding. That's authoritarianism raising its head to tell you what to think rather than liberalism which encourages you to explore and seek the truth by critical thought and examination of the information you have available to you in a way which isn't predetermined.
It isn't a easy process. Nor a simple concept.
I'm rambling again, but I hope that makes some sense.