Trying to improve

Hi everyone, since I have joined League I am trying to improve everyday, playing, looking some gameplays of good people, etc. I found that it worked a bit, because in my biggest effort to learn I reached a good division for me. Now, one near friend has became coach and I see that the best for improving is knowing your own mistakes, and try to correct them So here is my question: Do you have or know an app for mobile, computer or whatever, that tells you what are you failing? Like, you put less wards than other players, or you died alot in x minute, bad farming, bad build vs that composition,etc. I know that I can do it by myself but that's a lot of work, and I am not contempling a coach.

PS: I think that this is important: I dont know what happens, but I feel that there's a lot of toxic people, I had been a lot of time out because when I play without friends I don't enjoy the game as I did. I don't know if I am the only one, but I see that comunity is getting worse by the time. I hated people that /muteall just starting the game, but I think that is one of the best methods. Maybe because I am back at gold and in Plat is different. So, if you see that a team mate is struggling at lane, or if you are feeding, please do not blame/flame other ones, just concentrate in your game and ask for help nicely.