Grade System Check

Where did I say you have to go warding alone? As you walk with your ADC from bot to mid, throw a ward on dragon, or ping assistance to ward blue/red. If your jungler is taking the rift scuttler, throw a ward on dragon or baron, because the scuttler vision doesn't give enough to show the HP of said dragon and baron. If your tier 2 mid turret is getting pushed, place wards around it. If you're pushing the tier 2 mid turret, place wards around it. Making sure the enemy isn't going to flank your ADC is just as important as being there with them in making sure they don't die, if not more so, if the enemy isn't already there, in which case you obviously shouldn't leave to ward.

I recognize that there are many cases where it feels unsafe to ward deeper/further out, but in those cases walk with someone. Even if their goal isn't to ward, if someone is running through the jungle, you can stay with them and ward as you go. The same goes for roaming; just stick with one or more other people and ward the important places. You should encourage your teammates to ward the more localized areas as you push since your sightstone wards last longer than the trinket wards, so having them on objectives is more effective.

There are inevitably going to be times when your ADC goes back to base when you don't need to. Don't follow them. Head to where they will be and ward as you go. There are also going to be times when you need to go back and your ADC doesn't. Again, head to where they will be or where you are needed, and ward along the way.

If you have vision on every enemy, you know nobody's waiting for you in a bush in the jungle, so you can go warding. If you saw an enemy go back to base less than 30 seconds ago, and you have vision on the others who are alive, you know they won't be in your team's jungle. Take advantage of the vision already present to safely ward the places you need to.

I'm just saying you need to be smart about it, as with everything in this game, and if you don't have a high vision score as support, you could be doing a better job. Even just 2 wards every 3 minutes on average for a 30+ minute game is exceptional, and naturally remember to buy Control Wards. Keep the little things in mind and they'll add up, and before you know it you'll have vision scores of 60+ in 30 minute games, and you'll be getting S like nobody's business, since you clearly know your stuff when it comes to combat.