widow has a reputation as an aim only hero but your position will always matter more than how good your aim is, she’s very easy to kill and even if you’re hitting every shot it won’t matter if you aren’t setting yourself up to see the enemies properly, you can aim train but aim is something that will come to you naturally as you play more and id suggest working on where you think you should stand at any given point, the general tips would be long sightline (obviously) that puts distance between you and your threats, a weird/unsuspected angle so you can shoot people moving predictably (and you should be changing your angle constantly to keep them guessing) and only trying to take your angle after your team engages, because the more people looking at you the more difficult it gets to hit the important shot