> I've tried what that 9 year old article says.
You're right, apologies. That was an older answer -- as you can see, your specific request has been discussed (and discouraged) more than once. I was actually looking for https://indesignsecrets.com/outlining-fonts-the-2016-edition.php
(Just for the record: it re-states that (1) outlining fonts is bad practice; (2) you should not be doing it; (3) .. even if your obvious clueless printer "demands" it; (4) but if you do, use Acrobat Pro. Dov Isaac's official advice dates from 2015 so I'm not sure if you would consider this "too old to follow" too.)
We have (kind of indirectly) asked you again and again WHY you want to outline text. You haven't replied. We ask because it's a bad idea, because it damages quality and usability, and because it is almost never needed. But there's a lot of bad advice on the internet so 9 times out of 10 people are doing it when they don't need to. Even more confusingly, you keep posting screen shots with no text in them, so we have really no idea what your problem is with outlining text.
if you must convert text to outlines best do it with the exported PDF in Acrobat Pro DC.
Print Production > Preflight
Acrobat Pro DC 2015 Profiles
Right most button: Select single fix ups
Document > Convert fonts to outlines
Run the fix with the Fix button of the Preflight panel.
( ACP )
EDIT: Did not see datap's nested reply with the screenshot of Acrobat's Preflight panel before.