No Bing Indexing Issues - GSC Indexing Issues Destroying Site

So we are noticing all pages on a website are indexed just fine in Bing, all of them there, no issues...in Google GSC our pages are slowly dripping deindexation, of course, contacted GSC and they said nope no issues, losing 25% of a site in a few months seems like an issue to me...any thoughts?

I face Same deindex