Beliefs. Knowledge. Justified true belief. Justified knowledge.
All of that is to say you cannot be certain and so you go through life assigning probabilities whether consciously or subconsciously.
I think you are just hung up on the word belief. You seem to have a strange aversion to it. I don't quite get it personally with all due respect. To have knowledge without being 100% certain is to, in essence, believe something.
Almost all knowledge is a belief of some sort. 🫡