Games feel surprisingly difficult out of no where?

DoobyDobby - Summoner Stats - League of Legends
DoobyDobby / Silver 1 48LP / 347W 351L Win Ratio 50% / Riven - 261W 242L Win Ratio 52%, Master Yi - 13W 9L Win Ratio 59%, Kayn - 5W 14L Win Ratio 26%, Tristana - 6W 6L Win Ratio 50%, Qiyana - 4W 6L Win Ratio 40%
I was at one point this season Gold III but it feels like as the season draws closer to the end the games start feeling unbelievably difficult. Fighting high gold players was nothing but now I'm losing games to bronze players and it feels completely hopeless. Is the match making that bad or is something else going on?
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