Not related to your question, but does the new internet connection support upnp? You could use that to open some ports if needed.

You're asking the wrong person :)

I would think there is no way for Wii games without physically owning them.

I emulate it using Yuzu. Ryujinx might be an option, but I haven't tried it because it runs great on Yuzu already. If you're looking to install several emulators, give Emudeck a try. There are several guides around to get everything ready (don't rush it!).

Link's Awakening on my spare time. I've also spent several hours modding Skyrim, eager to see how that turns out

Been playing Link's Awakening on the Steam Deck. Halfway there, and SM64R96 is probably next.

What app are you using? So far I've tried Liftoff, but I'm looking for something closer to Relay