Follow my instructions:
You gonna have to play a lot, and Very consistently... I've noticed a barrier in bronze, silver, gold that makes lower players have to literally CARRY the game to Win, and you have to be able to CARRY consistently to do that.
Do the following, download Aimlabs, Koovaks or anything you want to train your aim, train It for at least 1 Hour before Playing. ( you Will feel you aim hot)
After this enter the training in Val and do flicking for at least 15 min.
After this enter DeathMatch and play 3 Matches of DM, get out and play one Ranked, after the Ranked play 3 DMs and play the Ranked again, 3 DM - 1 Ranked.
Do that until every match you're able to kill at least 25-20+ Kills consistently. Do this and you Will reach the "important Matches", this is the Matches that you have to Win, normally they are in the Rank-3 70pts-100pts.
When you Win them you gonna rank up, and yes, you have to give calls to your team :D or your fucked.
Good Luck pal, this always Works.