Need Help With Riven

I am bad at RIVEN yea.. i know this person > I was pretty good at her when I mained her at the start of season 5 and stopped a little less than half way through the season. When I started back I couldn't do anything I'm back to wall jumping but I can't use my passive good or land my ult or animation cancel any more pls someone help! Also, I feel like I'm not doing as much dmg as I should whats that ? a nerf on q? Nerf on passive ?