guys pls help i want to play the eShop on my refurbished Switch, but I keep getting this:

Can't connect to the server.
The server may be busy, or your network connection
may have been lost. Try again later.
Connection test: Internet Failed
Im on a 5 GHz network. My phone and laptop work fine. The console says its connected to the internet in the settings, but as soon as I try to actually go online, it fails. Im missing out on game nights with friends 👍 What should I check?
game night is in two days, and i really dont wanna be the one who cant join. any ideas are welcome, even basic ones.