Many people believe UFOs are real also, and they too present pictures of them as proof. Are you convinced that UFOs are proven to be real? That it is no longer just a theory, but is a proven fact.
Many people believe many things are real. They provide pictures that believe prove that their belief is correct.
I'm not saying that black holes are impossible, I'm just saying that they have not actually been confirmed. The theory is widely acceptance, however, that too is not confirmation.
Do you understand what I am saying with that explanation?
I wrote an essay about Black Holes back in the 70’s. I've no doubt they exist due to both observation and mathematics.
Observing stars orbiting Black Holes. Observing dust clouds being consumed by a Black Hole. Observing Tidal Disruption Events. Observing near light speed ejecta from the “poles” of Black Holes.
There are many things you can't “see” that have been proven to be real and actually effect the world/universe around you. Still, you can't actually “see” it, nor can you take a photograph of it.
What “proof” would suffice?