“Do you believe that Yehoshua literally made the Sun stand still”
Unless you have a source that says otherwise, we are required to believe that it did, and it may be kefira to believe otherwise.
Even when it comes to Midrashim, I remember a teacher of mine pointing out once that even when it comes to those Midrashim that are not meant literally, if someone does not believe that they COULD have happened literally, that shows a problem with their Emunah.
When we don’t believe that something has a literal meaning, it is not because the literal meaning CAN’T be true, but ONLY because our Torah Greats tell us that it did not have a literal meaning. NONE of this should be about our personal beliefs but ONLY about what our Torah Giants tell us (as LF stated previously).