i’m fine with storms during the day, but at night for some reason is totally different. my anxiety skyrockets immediately.

I go through this too. Sometimes I even behind crying from it

Thunderstorms gave me anxiety after one summer of extreme storms with back to back tornado warnings. After that summer I found myself getting nervous whenever we would get a thunderstorm. To help with this I downloaded an app with nature sounds and listened to thunderstorm sounds as I was falling asleep, or just relaxing. It’s my belief that this helped me get used to the sound of thunder and not associate it with a scary experience. Hope this helps!

My suggestion is to listen to the sounds during the day. Like pull a video from YouTube that has storm sounds and music together. And play the sound REALLY low while doing something enjoyable. So it's background noise. Keep practicing with the low volume until you feel brave enough to raise the volume little by little. Similar to exposure therapy. It might take you some time to find what works for you but don't give up! I'm still learning to get over an intense phobia of spiders. It's gotten better, but I'm still working on it. :) Best of luck.

Noise cancelling headphones, so you can listen to music or a show and don’t have to hear the thunder, and probably a weighted eye mask to block out the lightening. And a weighted blanket too!