delete a package/app installed with pacman -U option

I have installed a docker desktop application on my Arch Linux xfce4 and I want to delete it because I want to only use docker-cli (because the docker desktop conflicts with docker-cli in services and daemons). I installed docker desktop with these steps: 1. install docker-cli (docker-engine,docker-compose.....all the required stuff) 2. downloaded the arch package 3. then did: sudo pacman -U ./docker-desktop--.pkg.tar.zst How can I now remove this package? I have searched the internet but couldn't find a specific answer.