I request help.

So, i've been playing league for 3 years now, and its safe to say that since the start I've improved hugely. I was silver 3 when the last season ended (I know silver isn't that great but it didn't stop me from wanting to improve) Im now Gold V, i reached gold IV not too long ago which took a while and some very dedicated concentration. As of late i lost gold IV and have stumbled all the way back to gold V at 0 LP, in the midst of my angst i have been quite disturbed by the fact that i seem to lose 3 games (im at 0 lp btw) and then win one which stops me from going down to Silver again (thank the lord) at this point ive used every tactic in the book to get better exept re-watch my matches, in doing this i dont understand what good it'll do me "Look at the mistakes you made and what you can improve apon" i know what i need to improve apon but i don't know how to do these things too the level i should be doing so.

1. Map awareness, i really struggle in keeping an eye on the map.
2. Deaths, my death counts are close to bronze and its really annoying.
3. Team comps, in this i mean what champ to take when your team takes certain champions
4. My hot headedness, i get really mad at myself when i cant play to how i know i should be playing To be honest, i really, really want to improve my play but don't know how to go around doing so I've made this to request you guy's on what you think i should do/how i should go around it, thanks for reading this wall of text and replying i appreciate it deeply. (Visual websites so you can check out my statistics) http://www.lolskill.net/summoner/EUW/Havada/summary http://freelo.gg/summoner/EUW/Havada http://www.lolking.net/summoner/euw/33361719 (Thanks again).