I checked my competitors, and they were experiencing the same thing. All i-gaming pages in Indonesia disappeared from brand keyword rankings, even the biggest ones.
Recently, I have been using the method: aged domain then inserting the landing page into a sub directory using an e-commerce template then using alternates to the subdomain or to pages.dev and others. but it no longer works, a day ago all the pages were 90% gone
'aged domain' is a no-go tactic. it only works when the domain has a very solid track record matching your current content, otherwise, waste of time and money.
So what's your suggestion? Buy an EMD/PMD domain and then use WordPress to keep the site active? Because in Indonesia, no one plays that way for rankings. Everyone does the instant method, like buying an aged domain and then creating a landing page.