Without braggadocio I may be a subject matter expert.
With regard to Posts:
Only Post that which is personal to you.
Post relevant issues. For example, Posting that which is not engaging will not achieve much. For example, a Post regarding social issues like Transgender stuff doesn't seem relevant but a Post about the meaning of life will engender Comments and points.
Responding to Comments within your Post will provide more conversations and subsequently more points.
Third, true life stories can be dramatic, sad or humorous. The story will appeal to others due to it being of interest.
Comments: allow your Comment to be worded such that Members will Like and respond to your Comments.
When making Comments, use the @ when referring to another Member. If the Member doesn't peruse that Post, the Member may not know about the Comment.
Simply a few thoughts that may help.
Others are invited to add thoughts.
Thanks