Why Do I suck and almost always lose lane unless my laner is brain dead or afk

Lanturn2002 - Summoner Stats - League of Legends
Lanturn2002 / Unranked / Lv. 43
Besides farm why do I almost always lose lane I try soo hard but I just completely flop when i play aggressive i get killed and when I play defensive I get killed I need help I only do well if I'm carried or the enemy leaner is really bad
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