For GameCube and Wii emulation, your top choice should be Dolphin. Dolphin manages to imitate Wii’s motion controls without the use of Wiimote, and it allows you to use the Nintendo Wi-Fi connection for more online play options. So, there is no reason to despair, as you can still play games that require the Wiimote, like Mario Galaxy and Skyward Sword.
Unfortunately, things might get complicated for people using devices with technical limitations. The best way to avoid any glitches in play is to use a powerful CPU and GPU. That way, you will avoid any possible drawbacks.
You can download the program from the official website, but make sure you open the Stable Versions section and download the macOS or Windows versions with the latest updates. By doing that, you will be able to take advantage of cheats, save files by setting up a memory card path, change the default resolution, add anti-aliasing or other graphic enhancements, enable overclocking, and many other things.