You're like level 20? so I wouldn't QQ so much about losses, its not like you lose so much in normals anyway. d;
People around your level probably only know about 20% of the game, so I also wouldn't recommend giving them advice or telling them what to do. Just gonna result in toxic behaviour which prolly makes you lose the game and get some unnececary reports.
Just get to level 30 and then start tryharding to get towards the higher leagues. If you're a jungler just make sure you gank which lanes are pushed, keep note of where bot/top lane wards, buy wards yourself for the river and on Amumu or Nasus as jungler get Aegis/locket as first items if your support aint getting it. If a lane is struggling just babysit it + when you cleared your jungler and your lanes are doing fine you could try to counterjungle eventho I would only do that if your absolutely certain about it. d;