Braum - Every time I play him I get retards

My favorite support of all time My most impactful support Highest KDA champion in my roster... lowest winrate of all 70 champions I've played (12% win rate with 4.2 KDA).

Guess I'm not allowed to play Braum because I automatically get a retarded team every time I pick him (mid-plat).

I can absorb 5 nuclear bombs, land a perfect 5-man ult with their carries caught out, use Redemption and Locket, and my team still loses fights.

But when I pick Garen support I can win 70% of the time or Urgot 63% of the time.