My orchid is dying please help!

[Bud]

I also think it is burns....the yellow rings around the burn is fungi. Bacteria will decimate the plant quicker. I suggest you water more often=your plants are dehydrated. Do not follow the weekly watering regimen you read sometimes. The watering must depend on your environment and grow zone. Water as needed (that was drilled on my mind by the senior members when I was a newbie) or master the skewer technique.
You were given expert advice by the others. I would listen to them.