Matchmaking

I am Gold 2 and it seems I am playing with more silvers then golds and plats. Every other game its mostly silvers and I dont mean silver 1 i mean silver 3 or 4. I get duos but its my whole team that is silver but me and one other member against all golds. My mmr on this account has been around gold 3/4 for two years and it is impacting my climb, obviously they are getting dumbstered by the gold 2 or gold 3 lane opponent.