3v5 and i stil lose more lp than I win

Just had a game where both my adc and top laner ragequit because they fed their laners too hard(Both dced at around min 8). Then me and the support got held hostage by our zed not voting no in surrender and the enemy team not pushing lanes. Even with all that, I lost 22 LP when I only gain like 18-19 per win. This is f*cking ridiculous as I feel like every game there is at least 1 person going afk and the team affected by it doesn't receive a Loss Prevention/Reduction, making ranked a luck based climbing ladder.
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