Adding on to the general idea that this song is centered around depression and "faking people out" so they believe he's fine, I believe
"I'm so afraid
Of what you have to say
'Cause I am quiet now
And silence gives you space"
refers to him, once he's out of the public eye, ceasing to be talkative and dreading having to overthink everything he's done wrong, and how uneeded he is.
Adding on to the general idea that this song is centered around depression and "faking people out" so they believe he's fine, I believe "I'm so afraid Of what you have to say 'Cause I am quiet now And silence gives you space" refers to him, once he's out of the public eye, ceasing to be talkative and dreading having to overthink everything he's done wrong, and how uneeded he is.