Imo u should try DST strategy. If u always say gj/wp and dont lose your lane hard than your team respects you enough to not mute u and even sometimes listen when u tell them to avoid tf, do drag/baron, push And if ur'e watched enough lcs u should know when to do what. If your'e medicore player u should get gold anyway before season ends and especially in higher gold ppl start to play good and all what they need to win is impulse like "we can win this teaam" or gj/wp after they kill, or force enemy to b. best thing about this strategy is that it scales with players level.
At least this is my way to get to gold again. (and kha op)