Submental Chin Reduction for Pointy Chin
Your pointy chin is due to a bone and soft tissue excess. This is particularly demonstrated in your smiling picture. This can be reduced by a submental chin reducion where the bony can be made pointy (more round) and any excess soft tissue removed.
Chin implant candidate for pointy chin
The side profile projection of the mandible is adequate, so a forward projecting chin implant would not be necessary. A chin implant with only the side wings present would help build up the sidewalls of the chin to give added width. This is called a Mittleman pre-jowl implant manufactured by Implantech. For diagrams and many examples, please see the link and video below