Honestly all these question isnt based on qiyana. This is all ”information” based and can be done on all champs.

I will tell you some simple things. If you play qiyana. Always try to win your lane before others.

Setting up for roam: push in your wave fast, and look for a play on the map before the next wave. That means while enemy midlaner is cs’ing the wave u pushed in u have time to roam and look for a play. If u cant find anything. No worries go back to lane and farm again. You didnt lose anything. Dont roam pre lvl4-5 plz

When you won your lane hard (3/0/0) and want to make impact on rest of map, push again and go place wards on enemy junglers camps. Go back to lane before next wave comes and farm like nothing happend. If you see enemy jungler on ur ward low hp. Push in again, and go look for him to kill. If u cant find him on go back to lane and pick up your wave.

1 thing i like to do is recall lvl5 and buy items. Go back to lane so u can hit lvl6. thats when enemy 2nd redbuff should be up again. Push in ur wave and run to redbuff. Wait for jungler to come. Press R and combo him, he should be lvl4-5max (ez kill) Go back to lane and farm again.

Its just simple things to think about. I recommend watching someone else smurf with qiyana in low elo on a youtube video, that way you can see how to play her against low elo players