Karma in a one on one interpersonal interaction is actually a pretty good measure of what the general consensus is on your opinion, at least among this site's active userbase.

You did make a mistake. You misread someone's intentions. You didn't do it on purpose, but it was still a mistake.

You are extremely defensive right now, and I'm sorry that things in your life are so bad it's pushing you to be this angry at people online.

Please practice self-love and care soon. You need it.