Just for you dear friend in the future: I finally got it fully uninstalled by deleting also all comfyui-related thing in
- C:\Users[windows_username]\AppData\Local\Programs → deleted @comfyorgcomfyui-electron
- C:\Users[windows_username]\AppData\Local\ → deleted @comfyorgcomfyui-electron-updater
- C:\Users[windows_username]\AppData\Local\uv → deleted this whole folder
- C:\Users[windows_username]\AppData\Roaming → deleted ComfyUI folder
Then when i reinstalled ComfyUI it worked normally!