The short answer is no. You cannot physically use a Wii or Wii U game disc in a standard laptop optical drive, whether it's a slot-load or tray-load mechanism.
Dolphin is a mature, open-source emulator for GameCube and Wii. It runs on Windows, macOS, Linux, and Android.
Downloading ISOs is piracy. To play legally, you must dump the game from your own disc using a hacked Wii or Wii U console.
There is no external USB drive for a PC that can read Wii/Wii U discs. Only the console's proprietary drive unit can read them.
Downloading ISOs = Piracy. Dumping your own discs via a homebrew console = Legal backup in most jurisdictions (format-shifting for personal use).