Let's start by not calling me 'sir' because I'm neither of an appropriate age to be called 'sir' unless you're under the age of 12, nor am I the appropriate gender.
But if you want an explanation:
while my other friend rage less and didn't get
To start I Rioters said just last week that they were still giving out these skins and hadn't quite finished going through the list of people that hadn't gotten a skin yet. If your friend hasn't gotten a skin and they don't believe that they're a rager then they should contact Riot about it. For all we know them not getting a skin has had nothing to do with their behavior in games and that your whole argument may or may not be invalid.
But let's just pretend he has talked to Riot and they have specifically told them that this lack of a gift is intentional (at which point they probably would have posted specific examples what disqualified them in the first place).
And i know that because my friend is a 100% rager even in real life
Riot obviously cannot account for real life raging. Not only that but raging in real life shouldn't mean anything at all. Why? Because Riot is rewarding/punishing players based on if they make their games enjoyable/miserable. If somebody is cursing a their computer 'fuck you Ezreal your fucking noob you died to Kalista for the 5th time and stole my damn kill again you piece of shit' Ezreal doesn't hear this, the 3 other players on your team don't hear this, and nobody is upset but the rager themselves. When the rager takes the time to type this out it not only hurts the team's moral and turns teammates against each other but it's also time spent with teammates not playing the game and that hurts the game even more.
my other friend rage less
To what extent they rage is another factor. Maybe the 100% rager friend says things like 'gg report this Udyr doesn't know how to gank' whereas the friend who rages less often goes on whole triads claiming that this Udyr is aids and mentally retarded and uses derogatory words to describe this Udyr. The extent (how long, how often throughout the game, if you bring your shit to all chat) of which the verbal abuse and offensive language continues changes the chances of being reported. Actually AFKing or refusing to cooperate with teammates because of your rage is also another factor to your chances of being reported.
less
Define 'raged less'. Are we talking about in a lesser percentage of games? Because out of two people who rage once every few days if one plays 1-2 games a day and one plays 5 the latter will get less of a punishment.
Some people had the bans but got the skin.
Other people had the same bans but didn't get the skin.
But was it the same ban? Was it both of their first offenses? Same time? Same reasoning as to why they were banned? If so and if the second person was specifically told by Riot they shouldn't get the skin than the first person getting the skin was a mistake, a human error made by Riot. Which is to be expected.
If you gonna filter people then be fair.
If you personally believe you have a friend who has gotten a skin when hey shouldn't have you are more than welcome to send Rot a support ticket because if you want a better community part of it is about taking the necessary steps to ensure your community is healthy. If you see someone beating up a little kid you don't just walk away and let the abuser get away with it. That's encouraging and stating that you allow that kind of behavior in your community. If you see someone beating up a little kid you stand up and say something, you do something. Call it a tattle tale approach but it's an approach like that, that keeps our communities clean. In a world full of humans running things by hand there is bound to be 'human error'. It's not Riot doing that on purpose, it's not favoritism. It's a slip in the cracks and you're just as bad for actually noticing the slip and ignoring it.