<human>: Give me a shortened version of the text

Personally, the I've had a few traumatizing experiences.

So, there were two friends of mine that I had known since I was a little kid. We all lived in the same neighborhood, went to elementary school together, skateboarded together, video games after school, you name it. We did it. Anyways, as time progressed these buddies of mine got caught up in things that I did not morally believe in. Drugs and whatnot. Now when I say drugs, I do not mean like marijuana. I am talking hardcore drug use. Anyways, high school came along and we sort of drifted apart as friends due to their new friends being too fucked up for my liking. My junior year of high school, one of the two buddies passes away. He died from an lethal mixture of  Xanex and methadone, dying in his sleep by asphyxiating on his vomit. This was traumatizing, and the kids life could have been saved if it was not for his "friends". They refused to call an ambulance because they stole the Xanex from one of his buddy's father and did not want to get in trouble with that. That was my first traumatic experience, because it was the first time I had loss a friend. The second friend passed away at the beginning of my senior year. With this one, he died in a car crash that could have also been prevented. Before driving home from a concert, friend #2 decided to take some acid. Of course, being acid, this messed with his senses and caused him to hallucinate. While driving, he misjudged a "T" intersection and drove straight off of a cliff, causing him to pass away.

The very first traumatic experience I had though, was whenever my Uncle Mike passed away from brain cancer 10 years ago. I was only 9 years old at the time, but this was the first experience I had with death (3 of my grandparents died before I was born, 1 died when I was still a baby). This is the only time I recall myself locking myself in my room and crying for days, due to how close I was with this man.
<bot>: My first traumatic experience dealt with an uncle I was really close with, second and third ones dealt with two close friends that died preventable deaths dealing with drugs.