You can use wix-location.to() for the redirect. See the examples.
When you open the Lightbox, you can also get the close, and do the redirect there:
import wixLocation from "wix-location";
import wixWindow from "wix-window";
wixWindow.openLightbox("LightboxName")
.then( (data) => {
let receivedData = data; // returned data if needed
wixLocation.to("/something-interesting");
} );
I hope this helps,
Yisrael