With aging, hearing frequently deteriorates.
You can make yourself understood better with a few tips derived from development of voice recognition systems for computers.
Place spaces between words
Speak in sentences.
Note this from an explanation of what made speech recognition systems as successful as they are today.
The Bakers' approach (to speech recognition) was based purely on statistical relationships, such as the probability that any two or three words would appear one after another in spoken English. They created a phonetic dictionary with the sounds of different word groups and then set to work on an algorithm to decipher a string of spoken words based on phonetic sound matches and the probability that someone would speak the words in that order. Their approach soon began outperforming competing systems.
For a computer, it is terribly difficult to understand the first sounds of any word. Therefore avoid short statements.