is incredibly close to 0%.
You are 1 in 7.5 billion people. That’s 0.00000013% of the world’s life experience belong to you.
Out of all the topics there are to study you know only a small fraction. Engineering, Finance, Medicine, Chemistry, Biology, etc.
Out of all the possibly interactions you can have amongst those several billion people, you’ll only have for all intents and purposes 0% of them. Much smaller than the percentage listed above since there are so many more combinations of people to interact than there are people.
Of all the places in the world it’s likely you’ll see less than 1% of the earth’s surface. Even then it’s likely much less than that as that is almost 2 million square miles since the earth’s surface area is roughly 196 million square miles.
I could go on with more points, but that seems unnecessary. When you realize how little you can know and experience it may help you open your mind and listen to others, they may have experience, knowledge or insight that can help you understand your situation and the world better.