Should i quit ranked?

Im trying to get to diamond by the end of the season. I have currently lost 5 games in a row and demoted to plat 2. I now have a 47%. I rage queue because I can't help it. I refuse to accept that I got outperformed. I usually have suicidal thoughts when i'm in the current state that i am in now. Is it worth it to play ranked anymore for me?
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