We used to get taught about media trustworthiness, bias and intent as part of history lessons at school in the 1990s.
They'd show you a contemporary report from one side of an event, one from another point of view, then one which was written 100 years later for example, then look at why each side would have motivation to lie and what they'd potentially gain, and on behalf of who etc.
Michael Gove got rid of all of that type of learning, to be replaced by "People should repeat a list of things that the teacher says", which was the system used beforehand "in the olden days".
Anyway, I'm pretty sure that doesn't help us.
It also doesn't help that one of our political parties, with a lot of Russian money thrown at it, has its own propaganda channel (Gammon Bell-end News), not to mention the almost unanimous support it receives from most TV news programmes, newspapers and right-wing social media.