You can tell if a preacher is genuine or fake by the Fruits of the Spirit that are in them.
Love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control.
Galatians 5:22
You can lead a horse to water but you can't make it drink.
It will drink when it gets thirsty.
There will always be sheep but they need a good shepherd, one who cares for the sheep and protects them from the wolves.