As a parent, I can tell you if you were to die by suicide, it WILL BREAK THEM. Don't do this. It is very possible that you are suffering from depression due to a biochemical imbalance. Depression is a treatable illness, and you MUST share your feelings with them immediately. How you overcome this is to confront the issue head on.
Sit them down and say, "I need your help with something important, and if I don't get the help I need, I fear I won't be here next week." Make sure they know that you've had persistent thoughts of killing yourself. Then ask to see a psychologist, mental health counselor, or psychiatrist immediately.
I also want to give you crisis contact information as follows.
If you are in crisis and feel like you may harm yourself, call 911 for immediate life-saving assistance. You may also contact one of the following resources for talk or text support:
1) National Hopeline Network 1.800.SUICIDE (1.800.784.2433)
If you or someone you know are depressed and considering suicide, call the National Hopeline Network at 1.800.SUICIDE (1.800.784.2433). Your call is free and confidential. Or chat live with a crisis volunteer at http://hopeline.com/.
2) National Suicide Prevention Lifeline 1.800.273.TALK (8255)
Call 1-800-273-TALK (8255) to talk with a skilled, trained counselor at a crisis center in your area. Available 24 hours a day, seven days a week.
Note that the National Suicide Prevention website lists additional, special hotline numbers for Spanish speakers, people with hearing impairments and veterans in crisis, and people facing distress related to natural disasters: https://suicidepreventionlifeline.org/talk-to-some...
3) Crisis Text Line Number 741741
Finally, please be sure to access this terrific resource: https://www.helpguide.org/articles/suicide-prevent... which describes action steps to take if you are feeling suicidal.
If you're in crisis and prefer to text rather than call, then here's a confidential crisis text line staffed nationally by trained counselors in suicide prevention. Text "HOME" to 741741 from anywhere in the United States.
I'm counting on you to do the right thing here, particularly since you love your parents so much. If my daughter were to reach out to someone this is precisely what I'd want them to tell her. Know that the world needs you in it, my young friend.