As individuals we are trapped within our own perception, socrates allegory of the cave, but so is everything. Each indvidual thing must act within its life in this world, through its particular perception of this world.
There must be a common perceived world that we are all experiencing and acting within.
In an evolutionary time frame perceiver, perception, and object changed together. Colour vision evolved with colour presentation as vision proved advantagous for both seer and seen. Survival of a organism, a thing, depends on how it perceives and how it's perceived, it's relationship to the reality of this world.
Is it so that we perceive a common world or share a common perception?

m

What I really see here is a recognition, on some level, of the egocentric problem, which is that you cannot observe phenomena from the perspective of another, and you therefore revert to the false belief about the nature of phenomena, that they have a reality independent of their being named and conceived, because you wish for your conventional beliefs, which are false, to not be false.

A good starting point to answer the questions you allude to, for you, would be Pyrrho, although I don't agree with all of his philosophy, given that his proof that phenomena are not independently real is not then carried out to include the self. But his advice on how to live without making judgment, and how to behave among the conventions is sound advice.