“Some souls are simply lost and they know it.”
However, if we cannot be a light in their darkness, we are in the same boat they are.
The worst of that lot probably consider your efforts to be harassment.
Every soul created by God has the same seed of Light as it’s center. Some hide it under a basket, some hide it under many layers of stone. If you could see the center of their souls, you would know that there is goodness under all that darkness. If you provide more darkness through judgement, you are not helping them. (When Jesus said you must be like child to know thy Father, He was speaking of the purity of a child’s soul that shines through their eyes.) Even as adults, we can remove the many layers to be pure and to shine as a child. That’s the reason for the halo portrayed by the artists. It’s the Light of the soul shining through.
It is only by using the Light shining within yourself that you can help others raise their dark coverings and realize the joy of their own Light within. This is true even for souls that have passed on and no longer have a physical body.