Does truth exist? The answer is yes - do not give in to the idea of relativism

Does truth exist? Of course, if and only if you believe in God it exists.
Otherwise, it becomes quite relative, the existence of truth.

If you believe in God you are persistently searching for His Word, and this brings you to develop important components that make you skilful in listening to what is coming to you from the upper existence (The City of God) which is intertwined with the reality you experience everyday (saeculum).
Into the saeculum is dominating the mainstream narrative, which is controlled by a restricted number of people who are the dominators of the narrative and therefore of the world, or at least this is what they aim for.

Who controls the narrative has as a goal to control the entire population of the earth.

But believing that truth exists (God) will teach you to go along your path, in a search for it, and this will enable you to see the very many signs of truth. And while you will develop all the components you need within you to separate truth from lies, you will become independent of the dominating narrative of the saeculum because you are looking for a loftier narrative, which will guide you to know the truth.

But keep in mind that searching for truth is divisive and never gives peace and rest. The truth will become your cross. If you can support the heaviness of that cross you can look at the truth's eyes without trembling because of what is happening around you.