Can excessive masturbation, accompanied by sexual fantasies and intrusive thoughts about eating food from a former female neighbor, be a cause of depression, social anxiety, and isolation, and how can one get rid of these problems?

Persisting in a bad habit is evidence of weak resolve and determination. The reason for this is weak faith, and it is not necessarily due to magic or jinn. Whoever wishes to rid themselves of it should be sincere in their repentance to Allah, occupy their time with what benefits them in their religious and worldly affairs, associate with good people, and avoid the fantasies that incite them to commit the act, all while supplicating to Allah and asking for His help. As for excessive sensitivity, it is treated by seeking Allah's help and recalling forgiveness, forbearance, and patience. Sleeping on the stomach is disliked in Islamic law, and if it leads to practicing masturbation, it must be abandoned.