Drywall stain bleeding thru after 5 coats of paint

My drywall was wet before due to a leak. It has a stain mark. But after 5 coats of white paint from Behr brand and Kilz primer, the yellow stain is still bleeding thru

In the past, I remember I had to scrape off the paper and put new mud/sand again. Then prime, paint.

Now it is all done already with texture and paint. Is there a better way to fix this?

I am thinking about getting the white color from Sherwin Williams but I am not sure if it does any difference.