My HN karma is -2
What should I infer from this Karma value?
Nothing probably, your very first comment (2018) was downvoted. You have not made many contributions through comment or suit to make up for it. Hopefully you are one step closer to positive now!
there are a number of possibles...
quality/perceived quality
brigade bots
grumpy users
3 year old account with low post count possibly botted.
these are just possibles but it sometimes takes time and trial to develop a rapport with the HN