Every single one of my games we lost horribly and i have NO IDEA WHY. We just got fucking destroyed and there wasn't any reason for it. I'm not sure if it was skill, champion picks, or what, this has been happening a lot.
This strongly suggests you're not 'playing to improve'. The concept of playing to improve involves analyzing your situation, what you did correctly and incorrectly at given moments in the game. For example, if you fed first blood as a mid laner you can ask yourself "okay, what happened here?". "Gragas walked into our Raptors at lvl 4 and flash-slammed me, ensuring the enemy has a kill."
Then you can think about ways to prevent this, such as keeping tabs on the enemy jungler, not pushing all the way to your opponents turret when a gank is plausible, having your side lanes warded (and not just the side bush, there are 6 entrances to mid lane). This is simply an example, since I don't even know if you're a mid-laner. The point remains that most situations can be analyzed for optimal play (such as who is fed on the enemy team? Maybe I should itemize against that person?).
tl:dr: If you don't know why you lost, the first step to improving is getting a bead on why you lost.