Why is this magical drug not approved if it is so good ?

Where are the studies showing it to be an effective treatment?

You can believe it works but if no one can produce studies to show this to be true then it remains a belief.

Side effects of ivermectin

Tell your doctor right away if any of these rare but very serious side effects occur: neck/back pain, swelling face/arms/hands/feet, chest pain, fast heartbeat, confusion, seizures, loss of consciousness.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This from the normal dose for parasites not the higher dose for treatment of covid.

Now why did you not get vaccinated so you did not get sick in the first place and end up in hospital needing treatment?

Your choice to not get vaccinated and miss out on the plane ride to a nice vacation site.