- I see if their flash is down
- I try to see if their enemy jungler is busy hitting up someone else
This is why. First it's extremely unlikely that a laner is going to be able to burn the opposing laner's Flash by themselves. If they could do that, they'd be stomping the lane already and they don't need you at all. The first gank you do to a lane is to burn Flash (with a low % chance of getting a kill) then you come back again before the 5 minutes is up. This forces the enemy laner to play super passive for 5 minutes which leads to your lane probably winning.
Don't wait for their jungler before you do something in the game. I don't understand this at all, actually. Why bother checking for wards in the first place if you will only act if you can see all 5 enemy members on the minimap? Your goal is to make sure you can see if their jungle/mid will come to interfere when you gank. Which means placing wards on their likely entry paths, far enough away you can bug out if you see them making a move on you.
Basically force the Flash so your laner can play aggressively. Ward around that spot and keep visiting the guy with no Flash any time he tries to do something risky.
Edit: You can't save all the lanes. Pick one at a time and kind of decide based on how easy it will be. High burst + CC lane is the best and that's usually mid or top. Get them boosted really early if you can, then wait until you can 4v2 bot as it's harder to win with just you. Your team will usually shut up if they see you helping one lane, cause they can see you have a plan and are aggressive about it. It also makes the enemy jungler have to react to you, instead of the other way around.