Hi Abisola, These spirits actually exist and they are all over the bible. There is a misconception in the church that once you are saved or you convert to Christianity then all of these things leave instantly. This is just not true. We see it even with the Christians in the bible. We are at war in the spirit realm and we need to stay fighting – not with people but with spiritual forces that are against us. The difference as a Christian is that you fight from a place of victory and not of defeat. We know how the story ends and we have the resurrection power of Christ within us.
This is a series that I would recommend for you to watch and pray and this will certainly help to bring freedom to your life.
May God continue to bless you and pour into your life abundantly. We will remember you in prayer continually.