Wow. This story had me in its grip.

You set up the story conflict really well with this paragraph:

Going in was easy but coming back to your body was the hardest part because as you leave your body the evil spirits sense an open host to possess into, corrupting the body and taking control, which my father always battles with every time he goes into that state. But, unfortunately, this time he couldn't fight his way back.

I loved the scene in the spirit world, and was compelled forward by the notion that this horrid being might steal his face!

Then I found this to be delightful — a bit of comic relief to lighten the mood:

"Hello!! Anyone here? I'm looking for the spirit name Koh…"

I would have loved a bit more detail about the spider. That was the most important part of the story, it seemed to me — the height of your story arc, and worth a bit more detail to build the suspense before he gets the key. But I really enjoyed it! Well done, @ubani1.

One correction for you... in this line I think you mean "meditation":

Father told my other siblings to wake him from his medication.