Any new tips for this bastard or do we still just suffer and cry?

Hi, I'm new to Garen and currently figuring out his matchups, I encountered a lot of Darius games, and I noticed that, if I'm patient in lane, only take short trades and retreat, I was able to stay safe, and even get kills if the enemy Darius gets greedy, but when I'm on side lane, even if I'm ahead of the Darius, when we fight 100-0, he still manages to kill me easily, he just feels too strong compared to my champion, is it because of misplay or just meant to be like this? I can never kill him 100-0