Cant get out of bronze

I have been to silver before, in Season 4, but i took a break and LP decayed out. After doing placements this season, I was placed in Bronze 4. I won 6 games and lost 4 and got bronze 4.

Ive been playing ranked constantly trying to climb, and I feel as if Im not doing a horrible job either because Ive been winning games. Ive gotten to where I have more wins than losses. However, the ranked system sucks. It really does. I won 8 ranked games in a row and I had to win that many just to get to bronze 3. Then I lost my first 2 games in bronze 3 and i got demoted right back down to bronze 4....How is that fair?

Now Im having trouble getting back out of bronze 4. I get into my promotionals all the time, only to lose in the end. Ive won my promos once, while failing to complete them 4 other times, in the past week. Yes, 4 times i got promos and got kicked out. It took me 3 failed promos to get out, being successfull on the 4th time. and then once I was demoted back into B4, I got right back into promos, and lost first try back in B4.

You get almost no progress or reward for winning an assload of games and then when you lose one or two games, the game punishes you HARD for it. Its really not fair in my opinion. I have literally been working my ass off to get out of bronze but the matchmaking and ranked system just keep holding me down. Every time i take a few steps forward, the game wrecks me and send me 20 steps back.

How is this a fair system? Not too mention how many bad players there are in this bracket. There needs to be more of a restriction on what qualifies a player to be eligible to play a ranked match.