Problems with rating calculation and match selection

[praimgg]

Before the update I had a phantom rank 2, after the update I got archon 5 but I was not upset, although it seemed strange to me that the rank was so low, I went back to raise the rank and after nine wins with a large KDA I was promoted 1 time, as a result, to be demoted I can lose 2-3 matches, to be promoted I need about 6 matches, to confirm my words you can view my profile: Kowari https://tracklock.gg/players/893784204, perhaps because of such a rating system the online in the game fell because my efforts do not pay off and there is less motivation to improve, because no matter how well I play and how many times I win, I am not promoted and do not get worthy opponents in the match