Why islam is considered as "only" "one" "true" path, whereas nature provides multiple reasons to believe otherwise?

I have started studying Islamic texts and thus multiple questions are coming in my mind? I am asking just for clarification and the thought process behind, there is no ill intention. My observation throughout my life is: In nature for a single species multiple variants are present, even in man made systems for a single problem multiple variant of solutions are present. and even while thinking we choose between multiple options to carry forward our thought process. Then why Islam ( or any abhramic religion) focuses on keywords like " only", "one" and "true"? From where this inspiration comes as in why we blatantly ignore self experiences i.e. our own empirical experiences and focus more on given text i.e. is there a proof based logic in Islamic text where self experience is considered as lower than scriptures? I mean to say even when I am feeling pain in certain condition, do I need to search for a text which "may be" opposite to that feeling. Take for example in general daily life as per my experience, valid sources of knowledge are from as below in descending order: 1) Self experiences /empirical evidence 2) Inferences ( previous or similar empirical exp behind it) 3) Analogy or comparison ( previous or similar empirical exp behind it) 4) Words from a "trust-able" source ( previous empirical exp behind it as trust is based on empirical exp) Now what I believe all the three sources(2,3,4) of valid knowledge can be negated by empirical experiences like the example of pain I have given. Whereas in Islam, my observation is otherwise i.e. Least form of valid source of knowledge is considered as best , but I believe there must be some evidence based logic ( logic comes in inference which is again dependent on empirical exp) behind it. Requesting you to please clarify. Please help me with query, I will be really thankful for these as it may help me to understand the Islam better.