A goalkeeper's communication should make the next decision easier. If you are talking constantly but the information does not change anything, defenders will eventually stop hearing it.
Prioritise information they cannot see easily: pressure from behind, a runner on the blind side, whether they have time, the height of the line and whether you are coming for a ball. Use names and keep the call early.
You do not need to comment on every pass or every movement. Give defenders some space to solve the obvious pictures themselves.
It is also worth learning how different teammates respond. One centre-back may want constant information; another may only need the key call.
Your voice should create clarity, not noise. If players trust that you speak when it matters, your communication usually becomes more effective even though you are saying less.
