Keep trying! You'll get it eventually! It's all about patience really.
It takes a LONG WHILE
What do I use to breed it
"The Ghazt can be bred using a combination of an Entbrat monster and one three-element monster." - https://mysingingmonsters.fandom.com/wiki/Ghazt
What's your friendcode? I can light a torch for you to increase the odds.
What do you think?