‘Magic’? Nope.
‘Terribly besieged’? Yes, it is. Since the siege was closed again, in late August, it became impossible to replace destroyed equipment, or…
‘Magic’? Nope. There’s a large number of NGOs trying to help the people in need. All provided you would care, it’s easy to follow their activities via social media.
‘Terribly besieged’? Yes, it is. Since the siege was closed again, in late August, it became impossible to replace destroyed equipment, or provide medical supplies. That is another reason why hospitals are repeatedly bombed: to knock them out, once and for all, and thus deny medical care to besieged civilians.
An re. keeping locations secret: that’s de-facto impossible, and that’s why hospitals are bombed so often, and knocked out as often — as that people like you wonder about how comes there are ‘so many’ hospitals there.
But, of course, all of these are ‘out of mind’ explanations, so feel free to keep on ignoring the situation.