I feel like as they leave more and more up to the algorithms, we suffer. I've been having this ever increasing in frequency issue where Gmail Search just doesn't working. Not that it doesn't return search results but rather that it returns what I know to be incorrect results.

I have an email with some account information that I access a couple times a year at most but will consistently need at least once a year. Just infrequently enough that I can't remember the exact contents.

I know exactly what the subject line of the email is and it's a suggested search query in Gmail but about 2 years ago Gmail just stopped being able to find it. I can navigate to the email via label or star just fine but I can no longer search for it.

Is it because it's an 8 year old email? idk what the reasoning is but Gmail as deemed it irrelevant and stopped returning it as a search result. This isn't a platform issue either, it happens in App, or browser on multiple devices.