Bruno's issue for me is he tries to do too much, he's got almost no positional discipline which leads to the chaos. Modern football is all about the entire 11, if he's gallivanting off out of position, our midfield gets swarmed and he's also knackered because he's covering too much ground.
Let's take Bruno, Odegaard, Maddison - three players who play the same role and look at their heatmaps from this season, one of them - no prizes for guessing who - is popping up everywhere on the pitch whereas the other two have a clearly defined area they operate in and then will be lightly involved elsewhere with almost no touches whatsoever on the opposite defensive side to them.
https://www.sofascore.com/player/james-maddison/356398
https://www.sofascore.com/player/martin-odegaard/547410
https://www.sofascore.com/player/bruno-fernandes/288205
If you are a 10 and you favour a side of the pitch, that is where you want to be spending the bulk of your time - when Bruno is on the right and involved in shorter or more creative passing, we make chances - AWB's assist for the goal versus Wolves and assist vs Forest with the knocked down header and he's a direct goal threat himself for longer balls: run that got their player the red vs Forest & goal vs Burnley.
He needs to be somehow forced to simply play his role and not try and do everything else, I get he's a bit of a hot head and maybe making him captain was a bad move but it's better for the team as a whole and it's where he is most dangerous.
Put someone calm at DM on their own, Amrabat is probably the only option as Case has caught the howitzer ball illness. Let Mount play 8 and make Bruno play that role and only that role or he gets dropped.