You are so wrong, Friend, but I know only The Lord can show you that.
Want to know why I started studying your religion? Because I love my Catholic relatives. I knew we were different, but I really wanted to convince myself they were saved.
I had an addiction to pornography and masturbation that I tried for years to end. Praying never worked; fasting never worked. Then one day I decided to search for a Catholic solution to my addiction to porn. I found a page talking about praying to Rosary. After the first time I prayed the Rosary, I have had no desire to watch porn and have had negative reaction to songs that talk about having sex. Some friends tried to get me to watch Game of Thrones; I only watched the first episode (actually I only stayed past the first incest scene as I was unsure of how to get out of it politely).
My addition to masturbation took longer to get rid of, sometimes I would forget to say the Rosary for a few days and would relapse. Eventually I found a set of Catholic prayers called the Divine Office. Included are ones to say just before going to bed; these finish with a prayer to Our Lady, the Blessed Virgin Mary, Mother of God, and Queen of Heaven and Earth. I have not had the temptation to masturbate at night or in the morning since starting these prayers.
However, I still had a problem with impure thoughts during the middle of the day. Saying three Hail Marys; one for Faith, one for Hope, and one for Charity; keeps these thoughts away for about half an hour.
If this were the work of the Devil, why would he give up one of his most powerful weapons against us?