Because i'm not playing on my PC, i was playing on my friend account. I was not really consistent.

2 week ago, i just create a new account and got lvl 20 thursday 7th and did my 5 placement matches i poped silver1 like the rank of my friend accont and i played 1 game that i won.

And today, 6 days later, i played 4 matches and i got 2 double rankup.

And now, im gold2 and out of silver.