Virtually no possible way to get out of the lowest league

My thought is matching system is garbage. I'll admit I'm not silver, or anything above. But I believe after playing this long, I'm decent enough. I know that this account is set up to fail utterly. I believe this to be true because I have a second account that was placed in lvl 4 and I even actually fulfilled my one goal for the season, just see if its possible advance one level and I reached that goal. With this account I finally been place last place in the lowest tier and then have a streak of losses. Like how can I be placed any lower, seriously. I'm trying to keep my cool and focus, trying anything and everything to at least improve my game, but its impossible.

In one game I get blamed for feeding, when I was even in early laning, yet they feed so much I get one shot when they enter my lane. I don't put my heart and soul into this, but with so much time invested. I'd never expected that I would be set up for failure on this particular account. I play very particular set of champs. And I try my best to adapt to bans and the strategy. But this is ridiculous. Having 5-6 straight losses while already at the bottom. It makes so sick I question why playing at all. I just can't be playing this badly for this long. especially when my other account is 2 level higher.