Getting out of bronze really isn't that difficult. It's about consistency more than anything else. I see you're playing some support, that's good!
4/8/16 Sona with a lich bane=not good. Don't use that item on her unless you're extremely ahead.
1/5/2 Ziggs
3/8/12 Zyra
1/6/4 Nami
0/7/7 Raka
3/10/14 Sona
2/6/21 Raka - Your only decent game out of your last 7 ranked games, and for some reason you built an archangel's staff on her?!?
You should look up builds or watch youtube videos of the champs you like playing. Some of your builds are really weird or just not the proper item orders. IMO on virtually any support you grab your SS with first 800 gold unless you got first blood and think you can snowball and not worried about their jungler.
Zyra->Sightstone->boots->haunting guise OR mpen boots OR frostfang depending on gold
Sona/Soraka->sightstone->boots->finish combined sightstone/support item
That tear nonsense is Soraka is really bad. You want utility/tanky on Soraka all the way. She's all about staying alive and healing allies.