Unfair rating system

Why when I win against somebody my rating, I get like +7, but if I lose against somebody my rating, I lose like -17?

Your rating's evolution depends on many parameters, including the difference between your rating and your opponent's.
You can learn more on this subject in the FAQ : lichess.org/faq#ratings

Happens to me as well. It’s not a @Arseniy_Rybasov thing. We all experience it. Though if I am excessively hydrated it is helpful, since I will be forced to go cry in the corner. Then I angrily chase after rodents in my backyard, working up a sweat before I go cry again behind the shed. Good exercise.

The change in rating not only depends on the rating of you and your opponent, but also on the rating deviation.

At the moment, your rating is not "stable", i.e. you have a high rating deviation. That means that your rating will be change much more. Rating deviation gets lower by playing more (rated) games. It gets higher again if you don't play.

So my guess is that you lost more points in an earlier game (where your RD was still higher), and later the RD was already more stable when you won, hence the lower increase.

The rating system is not designed to get you x amount of points or a specific rating to brag or something, yet it is fair because that is applicable for each player.

Instead the goal of lichess ratings is to get you a good match everytime you play. What appears to be a rating loss must be understood as a re-evaluation of your individual place in the pairing-pool, ideally causing a localization somewhere around a level where you play a game that you can win, that isn't too easy, too hard but just a challenge according to your very gameplay.

When I was first playing on line chess I felt the same way , and sometimes even after years of playing I still find that it seems far easier to lose points than gain them. Which means ratings are capped and if your like me in anyway , I'm schizophrenic and have a whole belief system that there are the gods that have the knowledge and humans that don't, but it is a delusion and I am quite mad but that is what I think. that ratings are capped and it's a rigged system. But that is a delusion . Build you up and knock you down. Depends how deep you go . In reality the ratings system is true and works ,my lowest rating when I started was 1450 after several years of playing online im up to 1700 but it is a very slow struggle. I have learnt a lot considering I hardly ever study . I feel your pain, in truth the rating system the same for all to give you same strength opponents. In delusional world, the whole thing a lie, and ratings capped, but that is why I always say , anyone can beat anyone. Happy chessing ,peace up SimonBirch xxx

@nadjarostowa Yesterday I played both of games in one variant (rating wasn't with ?), one of them I won and got something like +7, nex game I lost and got something like -17.

Rating deviation is non a binary switch, like stable or "?" It is a number. You can see it on your profile. For example, if you click on the left on your played variant, you will see that your rating deviation is still quite high (I think around 80 in your played variant). It will go down to 45 if I remember correctly.

And RD is obviously not the only thing that determines the rating change. The rating difference between the players is of great importance.

I don't think you will find your proposed scenario, where you played two similar rated opponents, but the rating changed wildly different in consecutive games, especially the second change being bigger.

@Arseniy_Rybasov said in #7:
> @nadjarostowa Yesterday I played both of games in one variant (rating wasn't with ?), one of them I won and got something like +7, nex game I lost and got something like -17.
Give us the links to these both games, please.

I don't remember what were that games, to be honest.