Sounds like what you needed was someone you trust, that's sober, that would tell you: 'listen, you are currently under the influence of this drug, that effect will pass and you'll go back to normal, nothing terrible has happened, you are just having a panic attack that's being magnified by the drugs, but really, nothing bad has happened, none of this will last, the drugs will lose their effect soon, and there is nothing to worry about except for your panic attack right now, that must be very uncomfortable. so let's try to calm down, let's focus on breathing together for a bit so we can stop your panic reaction.

In my experience such words can make a world of difference, a moment of fear can be turned round, back into a pleasant experience. I've regretted not having a sitter present when I introduced LSD to some friends. One of them got a message on his phone, that got him very confused, and although we managed to calm him down eventually, he experienced some severe panic, that I feel I could've handled a lot better when I was sober, but unfortunately I was also under the influence. I myself having taken psychedelics monthly for over a decade now, I tend to underestimate the psychological risks for new users, that's what I took from that experience, and I won't let it happen again. Psychedelics always need proper set and setting, and new users should have an experienced, familair tripsitter present, always. My friend didn't have lasting negative effects from the experience but your story proves that it's definitely risky and measures should be taken to always take them with precaution.