Why Korean churches are declining

Congregations are shrinking, and more people are watching via YouTube from home; there are almost no young people left.
People are leaving churches or not stepping foot in them at all because instead of spreading faith, they are engaging in politics and have degenerated into mere private business operators.
This is why I tell children to stay away from churches. Except for an extremely small number of churches, the majority seem to lack true faith.
.