Tuchel would have been the best coach for Chelsea but they missed him by sacking him. Chelsea does not have patience , they are always too fast to sack their coach .
You also don't need to judge Chelsea like that because the top officials at the Chelsea club also know how to make the team develop and become better in the hands of their new coach at this time. So just wait and see how the Chelsea team develops in the future because for now Chelsea has to fix everything that is needed so there is no need to judge how things are now. Due to the presence of a new coach into the squad
Chelsea coach Graham Potter is not very experienced. The most renowned club he has coached in his career is Chelsea. So it would be foolish to expect him to bring the Chelsea team to the title, or to improve Chelsea's performance very quickly. We are not sure if Graham Potter will be able to do anything good at all. So I don't have much faith in Graham Potter. Thomas Tuchal was more experienced than Potter. He could not stabilize the team this season. Chelsea need talented players now. I don't think Chelsea's performance will improve if they don't add talented players to the team.