At the end of the day they're all just models and different ways of perceiving and understanding the world. Most are viable in some ways, some more useful to others but as you say, it all comes down to ones perspective and coming to a true understanding of how another perceives the world is always going to be extremely difficult. Particularly when you consider undiagnosed mental illnesses, or the increasing prevalence of synesthesia among newer generations which can completely change how people perceive the world. I went out with a girl with synesthesia and they are perceiving everything differently. She was going around for most of her life presuming most people perceived the world this way since she wasn't properly diagnosed. Words, letters, objects, numbers and people all have an associated colour. Individual letters and numbers have their own distinct colour but when combined with other letters and numbers the colours combine to give a new colour. All sounds stupid but the net effect of this is people can much more easily remember things, stats, numbers etc particularly if they are studying or researching something.

Above was kind of a side point but it's just to illustrate where we stand I guess in terms of mutual understanding. In terms of our understanding of the cosmos, physics, quantum mechanics, etc I would refer to my first sentence. Any field comes with an implied disclaimer that fundamental principles can and will change and sometimes upend the whole field. A degree of caution is always worthwhile with any study but I feel archaeology is probably a good but slightly extreme example to illustrate this since it has active political components (the "victors") constantly forcing it's own narrative onto history and thus skewing true understanding actively.

I think when you talk about the cosmos you have to look at uniform patterns, structures and designs which exist regardless of the zoom level you take from nano, to cellular, to planetary and intergalactic. Whether it's looking down at the cells of our own bodies all coexisting and working away to make sure everybody continues to live to the worker ant fulfilling his own specialised task in an ant farm, all seek survival. Same if you take a top-down look over shibuya crossing. Ultimately it's all a struggle for survival. I have a friend who is published for developing a nanotech delivery mechanism for for cancer and he was really interesting to talk to. If you come across people who do work at the subatomic level definitely have a chat with them.

"It’s an astonishing thought that 99.9% of what an atom is, is nothing. In other words, one of the smallest units that collectively make up solid matter is almost entirely a vacuum or empty space. Ergo, we are mostly nothing, and the universe is mostly nothing. If all this empty space were to be removed from a person, they would be the size of a grain of salt (which would still weigh the same as the person did before being deflated). This radical realisation leads physicists to thinking of atoms as tendencies rather than as things. To illustrate, if we were to liken the dense nucleus of an atom to a pin-head, the electrons that orbit the nucleus would be roughly a kilometer away. Another comparison is that of a fly buzzing in an empty cathedral."

https://witnessthis.wordpress.com/2011/05/09/a-dummies-guide-to-quantum-physics/

Our own understanding of the cosmos does not change what the cosmos could really be

Some of quantum theory contradicts this in that the act of somebody simply witnessing something regardless of disance and proximity causes a change in state.

PS if you get a chance also do LSD or Mushrooms, anything with psilocybin since it temporarily removes all the white noise and conditioning from a person for a couple of hours. If it's your first time do it at home with somebody you trust and don't drink alcohol.