What word did you pick?
Well since so far we have had around 14 or so discoveries of gravitational waves, that all just happened to match templates of various size and mass, and since we have now also taken a photo with the EHT of a BH, it is far more then any theory you choose to contemplate. It is a scientific theory which continues to gain in certainty. But of course you may have some evidence of your own to show it is something else? That something else by the way, going on what observational data we do have, would be far more weird and strange then what you and river apparently see a BH as.
From one know nothing to another, there is nothing wrong with any inquisitive mind...there is nothing wrong with asking questions, but there is sadly plenty wrong in being a gullible fool and accepting what any kook will tell you, particularly when it concerns anal probing Aliens, ghosts, goblins, Santa, and fairies at the bottom of your garden. That is the result of a mind that simply has never matured.