I get very negative emotions once its dark.

Hang in there babe

Though it is true that people tend to be more negative once the sun goes down, this may be more extreme. If it is bothering you, and it seems like it is: "This is absolutely wrecking my social life." You should talk to a professional. Some random person on the internet's opinion: Seems like it's some form of anxiety, but you should see a profession to be sure.

Keep the light on when texting. Try not to text when you are tired or if it's getting too late at night. Get sufficient sleep so you can function rationally. You show great awareness of what's happening so with a few minor adjustments you will negate and overcome this thought pattern and perhaps misinterpretation of text messages in no time. Good luck .

Lack of light reduces chemicals that typically make you 'happier'. I think the chemical is called serotonin - can't remember. If you want to avoid feeling that way, maybe get a night light or sleep it off.

Yes brother
Try to listen, read and understand this article, u will be ok.
https://www.youtube.com/shared?ci=6lu2eIle8R4