John 20:30-31 [NASB]
So then, many other signs Jesus also performed in the presence of the disciples, which are not written in this book; but these have been written so that you may believe that Jesus is the Christ, the Son of God; and that by believing you may have life in His name.
A book of stories that only apply to apostles, written by the last surviving Apostle after most of the other apostles were already dead … is of little value to “you” and John’s stated goal.