What does a panic attack feel like?

I’m just curious of what a panic attack feel like through the eyes of a sufferer. I know the symptoms through Google search, but I just need to know what someone going through one would actually feel. I can’t find a good description on the experience on the internet. Bonus lurves if you can describe a panic attack from the onset to the aftermath.

Sorry in advance if this question makes anyone feel uncomfortable. I don’t mean any ill will when I ask this. Just curious.