Another crying topic

I've tried, I really tried, but bot is 0-5 every game. If it's game vs Malzahar they never have QSS, if it's game vs Zed they never have GA or Tabi. No matter if I win my lane or lose it, or pick tank to initiate, or mage to deal damage. Botlane goes and dies 3 times same way, like lemmings. I don't know, players must be machines to carry it. I give up.