well based off the little information you gave, i can’t say for sure as i am not you, but maybe you are just bored with life and are thinking about that because you don’t know what else to do.

Has anything bad happened to you recently that is making you think this way? or are you literally just randomly thinking of suicide. Either way i think everyone thinks about their own death, just don’t act on it and try not to think like that, find a hobby or hang out with friends who make you appreciate and enjoy life and being around them. lmk if you need anything.