Bear in mind that the libre is notoriously unreliable at low levels, so your hypo may have been more serious than you think.
When your blood sugar goes low your body pumps out hormones to push it back up: glucagon (which makes the liver pump out sugar), epinephrine (adrenaline), cortisol, growth hormone. So the actual symptoms of a hypo can be the same as a panic attack, or at least induce one. The good news about that is that though you're having a panic attack your body is actually working very hard to push your blood sugar up: you might feel like you're dying but it's actually very unlikely. And if the libre readings are correct, it's also good news that you're feeling the hypo at a level which is much higher than what would make you lose consciousness or start hallucinating. It's also really good news that you are only getting a couple of hypos a month.
The bad news: you're panicking because hypos are scary. Yes, they can be. They are the one thing that I hate most about T1 diabetes. But technology improves all the time : consider attaching a transmitter to your libre and set it to send you a warning when your levels go above or below certain points.
Does your partner know about your diabetes? Honestly, living with my husband has been much better than when I lived with my parents, though both help/helped with hypos. I don't need to fear night time hypos just because I know my partner will look after me if I go low.
Other suggestions? Talk to your clinic or your GP about your anxiety, and get some help. Hypo anxiety is pretty common among T1s, for obvious reasons, so you are not alone. Last time I had a bad hypo (2 years ago) I got my son to stay with me for a week while my partner was away, just because I was so scared (and my consultant put a temporary hold on my driving license while she contemplated my blood sugars, which is not great when you're a 15 minute drive from the nearest shops
).
Good luck. Try not to let T1 stop you from living your life.