Tips on playing Winter Soldier?

Lately whenever I play Bucky I feel like I'm doing horrible and did much better in the past. I'm queuing qp but I always end up with a crap ton of deaths and barely any kills. Honestly I don't think I'm hitting my shots either but MR stats usually say my accuracy is around 40-50% so I have no clue about this. I don't feel like I'm improving in qp but I'm getting worse.
Can I get some tips on how to play Winter Solder? I find his playstyle to be one of my favorites and want to get better at him but playing like hot trash every game no matter how hard I try is pretty discouraging.