Family & Friends

Friend kind trauma dumped on me, what should I say/do?

Not going into details but a friend told me a lot of bad stuff that happened to them when they were younger, but they did it in a lighthearted manner, and I didn't really know what to say or do so I just listened best I could and stuff. I felt bad for not doing more, I considered offering a hug or something but the vibe was kinda strange cause the lightheartedness.
Should I say anything to them? Or just continue being their friend like normal? Or something else I'm not thinking of?
I'm really not good in emotional situations so any help would be appreciated.
Friend kind trauma dumped on me, what should I say/do?
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