Reality objective or subjective
The twin notions of subjective and objective do not relate to reality but to different and indeed polar opposite perspectives on it. Neither of these two terms has any ontological import at all. Instead, they together map the fundamentally dualistic nature of our epistemology.
We know our "subjective world", which is in fact just the part of reality that we know in itself because it is our subjective experience.
We believe there is an objective world, that is, a part of reality that, although we don't know it in itself because we don't experience it subjectively, we are nonetheless certain that it exists.
Yet, reality is neither subjective nor objective. Subjective facts are what we know of reality because they are facts we experience subjectively. I know pain whenever I am in pain. I don't know pain whenever I am not in pain.
Objective facts are what we believe about some of our subjective facts. What we believe, in effect, is that they are objective facts. That is, we believe that they are facts of the material world. I believe there is a tree in my garden whenever I have the impression that I am looking at a tree in my garden.
The objective world is an abstraction. We look at the Moon in the night sky and believe not only that there is something which is the Moon in the night sky, but that, whatever it is, it is exactly as we see it.
However, we can't always be looking at the Moon. Instead, we have to construe the objective world as persisting outside our perception of it. The Moon exists even when we are not looking at it. Yet, this is only possible to the extent that we remember it. The Moon as we know it is only persistent, if at all, in our memory. Lose your memory of the Moon and you will lose your belief that there is a Moon that persists when you are not looking at it.
Presumably, there is something which is the real Moon, something we don't know because we don't have any subjective experience of it but which is what we perceive as the Moon. But we don't know this thing. It is not an objective thing. We believe it exists but we don't know what it is.
Instead, we know the subjective impression we have of our perception of it. Whence comes the objective world. The objective world comes from our subjective world. The Moon becomes objective by virtue of the fact that we agree that there is a Moon.
My pain will remain forever subjective because I am the only one to experience it as I do. All that other people will ever experience of my pain is what I look like, or sound like, to them, when I am in pain, and indeed their own experience of themselves being in pain. So, they understand my pain, but they don't know it. It will remain part of my subjective world, inaccessible to them.
But our subjective Moon can acquire the status of objective reality by virtue of the fact that we are all able to agree that the Moon exists.
Our view of reality will forever remain split between our subjective perspective and our objective perspective. This is an intrinsic property of cognitive systems. A cognitive system maintains a representation of the world. It cannot possibly know the world.
All it knows, if it does, is the representation it has of the world. This representation, if it is to be operationally effective, should be an objective view of the world. That is, the cognitive system should believe the representation to be the world itself, and it should be such that similar systems should be able to agree on what is the objective reality.
The representation itself will be subjective, since only the system itself will have access to it. But the system will believe that the representation is not a representation but the objective world itself.
Thus, our objective perspective on the world can only come from our subjective representation of it. And the main operational function of our subjective representation is that we believe it to be objective, that is, that we believe it to be the real world itself; or rather, that we mistake this cartoonish sketch for an objective world which, in effect, doesn't exist as such.
Fortunately, there would be no use for any realistic representation of reality. What matters is that this representation should be operationally effective.
The fact that I can have right now a nice cup of tea seems to show that this is what it does.