I use a "trick" about that.
From last season and now this one.
When I 'm home so I have available two devices (or browser), I start watching the game of my main team with my reserves first.
If oppo is watching, I 'm watching too.
If not, I 'm waiting.
If the game is going good (1-0, 2-0) or bad, then start watching.
So the absence of the manager (while also the oppo manager isn't present) reduces the chance of a troll result ?
More than a myth