Couple of things. The Havertz foul before the Spurs goal took place 40+ seconds before the actual goal and even if Romero was sent off for violent conduct, the game would restart with a Spurs corner and they'd just have one man less in the box. The Richarlison offside could have been given but that's more of a VAR call and not Taylor alone. Tuchel has to look within at some point this week whenever he is calmer.