They don't care.
They're not playing for the manager because they know he's out of the door in a few weeks. Interim manager with this group, in hindsight was the most stupid decision we could have made. Their actual visible attitude is 'so what?'.
The fans have to put the boot in now and not bother to turn up to games, and don't even tune in on the TV. Don't engage with their social media platforms.
Each and everyone one of them should be at the lowest point possible in terms of their stock, but they continue to earn obscene amounts of money irrespective of how they perform.
I'm done and dusted until August. I've no further interest in this group and I value my time more than this.
I truly hope United fans collectively take a similar approach - but I'm not stupid enough to think it will happen nor do I think the minority who will do similar will make any difference