I’m so sorry for the loss of your friend, @Catrin91. You’re not alone - many of our members have lost a friend and will understand some of what you’re going through. If you click this link, you can read some recent threads from members who’ve lost a friend, too.
You might also want to connect with @Niamhisobel and @CJxo who sadly both lost friends who were very young, too. They share their experiences in this thread.
I hope you find the community to a support to you 