Ask people to speak louder, but not shout. Tell them they do not have to talk slowly, just more clearly. Turn off the TV or the radio if it does not have to be on. Be aware of noise around you that can make hearing more difficult. When you go to a restaurant, do not sit near the kitchen or near a band playing music.
Background noise makes it hard to hear people talk.
Working together to hear better may be tough on everyone for a while. It will take time for you to get used to watching people as they talk and for people to get used to speaking louder and more clearly. Be patient and continue to work together. Hearing better is worth the effort.