Are envy and the evoking of sexual fantasies considered sins of solitude?

Fleeting sexual thoughts are forgiven as long as one does not dwell on them, and a servant must repel them. Envy is wishing for the disappearance of God's blessings from others, or disliking what God has bestowed upon others, and it is forbidden. Sins committed in solitude include hypocrisy and the actions of hypocrites who display righteousness and piety before people, yet violate sacred boundaries in their privacy, which may lead to the loss of their good deeds.