finding reliable media sources

My feeling is that quest is misguided. There is no such thing as a pure spring which gushes only truth -- you cannot find one.

My own approach is to accept that reality is fuzzy, multilayered, multidimensional, looks very different from different angles, and is almost always folded, spindled, and mutilated for the purpose of producing a coherent and attractive story. Read lots of different (but, hopefully, smart and well-informed) sources which disagree with each other. Together they will weave a rich tapestry which might not coalesce into a simple picture but will be more "true", in a way, than a straight narrative.

Having said this, I should point out that adding pretty clear lies to the mix is not useful and there are enough sources sufficiently tainted to just ignore.