Why does the questioner feel a lack of acceptance from people, that he has no friends, and that doors are closed in his face, and his depression increases? Is the reason for this the evil eye or sorcery?

Living without companionship is better than living with corrupt companionship, and the loss of a companion is not a sign of failure. What you are feeling may be a result of your excessive focus on work, or a type of envy, or magic (sihr). A person affected by magic typically shows predominant symptoms such as inability to engage in sexual intercourse, imagining things that did not happen, or forgetfulness, as happened to the Prophet, peace and blessings be upon him. The symptoms may also be internal, such as dream visions, but these symptoms do not indicate certainty of the presence of magic.