Actual speed isn't really that relevant. We've all seen these lists our the quickest footballers, but to even come close to your max speed you'll need to run 20-30 meters in a straight line without the ball or opponents around you. That's why these lists often are dominated by central defenders. Most players don't need to make those kind of sprints.
It is a problem that when we set up to defend in 442, we are always 2v3 in the midfield. We're always outnumbered. We're always a step behind. It'll make the quickest players look slow. Pretty sure Barcelona's women team would make Everton's midfield look slow. That's not because their players run faster than ours.
Football isn't maths, but stats can't be ignored. We know that teams with less possession need to run more and have more sprints than the team that controls the match. To stay in your formation and move from side to side without getting hold of the ball, is exhausting. Both physically and mentally. While the opponents hardly break a sweat and keep their legs fresh. Good teams keep the ball and use it to break opponents. A team such as Everton would improve massively from having more control and possession in games. Stop chasing shadows.
And maybe most relevant is where the game is played. If you play a game with very little possession and defend deep, you're awfully far away from positions where you can create something for your own team. The vast majority of goals are scored within seconds from a team winning possession. Teams that are brave and defend with a high line will on average be 20-30 meters closer to goal when they win possession. Not strange that their players look so much quicker in transition.
Everton will need to have more control and more possession in matches. And they need the matches to be played further away from Pickford's goal. If they succeed with that, results will come.
And if pace was a problem in Everton's best starting eleven, Tarkowski would probably be the first one that needs to be replaced.