Without my hearing aids, in a soundproofed booth, using both ears, I can make out 12% of one or two syllable words played over a loudspeaker. With my hearing aids, I can make out 38% of sentences played over a loudspeaker.
By “make out” I mean guess. In everyday life I can supplement this with lip reading.
You need to add more clues to get the sense of what is being said.
You need to know the context, are we talking ordering dessert? Then the chances are the word is cake. Are we pleading? Then it’s more likely to be sake.
You need to look at the face, what emotion are they showing? Happy? Sad? Angry? What does the body language say? What are we talking about, what’s the context?
Everyday life adds a few challenges. Most people speak more quickly than the voices in the audiologists recordings, there’s background noise, bad lighting, regional accents and phrasing, obscured faces, distorted faces, mouths full of food, – not only hard to lip read but pretty gross to look at.
A hard of hearing friend told me of a conversation where she thought she had been told by the other person that her son was married last week, so she congratulated her. Wrong, the son was buried.
Lip reading is tiring. It’s hard to look at someone’s face intently for a long while. The speaker can feel intimidated by your attention, they can also feel worried by the lack of eye contact, plenty of face contact, but little reassuring eye contact.
So, forgive me if I misunderstand what you have said, if I guess wrongly. I am trying so hard, I really am.