I know exactly what you mean. But again the numbers 1, 2 and the operator AND which you apply to them are not things that actually exist. 2 is merely how we choose to represent the set of apples that you are now presenting.
I fully understand where you are coming from, and anyone who has not engaged in mathematics beyond the level of high school does indeed share the impression you have of it.
But again, if you ever want to nurture an interest in mathematics then you really do need to engage with the fact that the term “1” does not exist in and of itself. It is a subjective comparative term we use to represent the universe around us.
Again I strongly urge you to read and explore the concept of “set theory” from which we get the concept of “1” and “+” and so on. Whole swaths of mathematics will make no sense to you if you insist on retaining the concept that “1” is something that objectively exists.
en.wikipedia.org/wiki/Set_theory
However this is entirely off topic, and if you just want to pull people up on short sentences rather than unpack them then I am not sure how to help you. Maybe if I change my generalised sentence to “What we know is subjective but constrained by the objective truths around us” you can move on and return to the topic of the actual thread?