I suspect the reason we can’t find the self is the same reason we can’t find the other conceptual objects in our imaginations. They feel real and they are useful but ultimately they are like money, religion, nation states, laws and insurance - purely conceptual and dependent on our shared belief in them.
I’m suspicious of the desire to lean too heavily on concepts such as the self and free will. Much of our societal structures past and present depend on their existence, how else can we accuse others of crime if the perpetrator didn’t have a choice? It wasn’t that long ago that we were prosecuting animals for the crimes listed in our statutes. Currently we don’t believe other animals are capable of this level of agency but nobody has presented any compelling evidence, either way.
Famously, Kant stripped away all his preconceptions and could prove only the subjective (I think therefore I am), whereas you seem to deny everyone their subjectivity, even your own. In any case since you’re interested in these questions, I assume then you’ll reach a better understanding of these questions, just keep studying and growing on your own terms (which is contradictory to your own thesis, but the whole is always defined by contradiction.)
The last thing I will do is deny anyone else’s experience but it sounds like you want to do that, all the while unaware of where that impulse originates. As if it percolated up into consciousness completely unbidden or did you will it into existence?
But what is experience, how can you find experience without a self doing the experiencing? I’m not trying to put it on you but it is consistent with your logic, as I understand it