Low elo here but steadily climbing

I think you need to recognize the elo you are at and build accordingly. I'm an mf main, and for a long time I went with the meta botrk + ghostblade. That's great in very high elo where you have god like positioning and great peel from your teammates. But you don't have that even up to plat. So I've started going with a more forgiving build, focused on lifesteal.

It is so good in my elo because it keeps mf in her passive, making it easier to dodge skill shots. And it obviously keeps you alive in duels and teamfights. The extra pure ad early also helps farm. None of these things are important to Challenger players really, but it helps to deal with my own lack of skill (which is improving btw) and the lack of skill of my teammates. There are probably similar low elo builds for other adc champs, but mf is notably versatile in her builds.

But I certainly feel the same way; I can play as well as I can but adc is just so team reliant. I especially dislike how many autofill supps I get.