I was diagnosed with Bipolar and have suicidal thoughts often.
You killing yourself would fuck up the lives of the people who love you and make them sad. In that sense, your life doesn't really belong to you; they're the ones who will suffer if you die.
Please don't do it. I know it's hard. And having a mental condition is tiring. You're a rock in the sand slowly being worn down by the waves. They never stop. And all of your fellow rocks are just past the high tide mark.