Ranked Question

Does anyone else go on 5-10 game win streaks, winning about 15/20 games, and then go on extremely massive losing streaks? I feel like I'm going through this continuous cycle. I climbed from Bronze 1 to Silver 3, and then it all happened. I go on a win streak, getting to s2 promos. I instantly lose both promo games and drop to 0 lp. After that, I get to around 90-95 lp and then drop back down to 0lp, and possibly get demoted. After that, I shoot back up, win promos to s2, lose all my s2 0lp games, and drop back down. It feels like this is a continuous cycle, and I'm really getting stressed out about it, even though I know I'm going to lose my games. I'm getting to the point where I feel that there is no need to play ranked. Thoughts?

Btw: I'm not going to say "Blah, blah bad teams, no wonder I'm losing." Some of the L's are my fault, but most of them I feel there is no way to win. And when I go on my huge win streaks, it feels like I have diamond players on my team and I'm versing bots.