you're either baiting people for a reaction or have a really skewed view of football.
Van Der Ven is one of the best up and coming centre halves in Europe - hence the anguish from the likes of Ferdinand and Neville that they got Yoro instead of VDV. Quite apart from his pace, he has all the attributes to be the best in Europe in the next 5 years.
Romero just won player of the Europa League and has been central to Argentina going on a winning streak of trophies. If he costs us a goal as you say every 5 games (I don't believe he does but I'll humour you) then the other 4 he saves us several goals per game. Nuff said.
Ben Davies, far from being our best defender, has been a liability for around 18 months now. Its not his fault, he wasn't suited to the system, but he's slow, he's often in the wrong place, and players around him often have to compensate for his positioning by getting out of position themselves.
Porro was one of the best right backs in Europe last season and played more minutes than virtually any player.
Udogie isn't a wing back - he was a left back in Italy and is a left back now.
Sorry but literally all the information you have presented as facts is rubbish.