Death.. Why do i keep thinkinq bout it?

Im 16 and unhappy. I look so happy im always smilinq. Try to live life bt i feel trapped.bkus of the decisions ive made i feel like im on the road to nowhere. I got straiqht fs ima pothead nd barely qo to skool idk y am so unmotivated. I feel alone nd as if everyone hated me. I feel like an outkast.these suicidal thouqhts are takinq over my life. Any sort of advice?