Wir müssen reden.
The first story in labs says 'Wir müssen reden'. I looked 'reden' up in google. Google is not always reliable but normally with definitions it is. So it said that 'reden' means speaking or talking. Kann Man nicht 'Wir müssen zusammen sprechen' oder nur 'Wir müssen sprechen'? Danke für deine Hilfe. Is 'reden' just alternative for 'sprechen'?
Please respond in english I was just testing out my German.
Reden is like talk, and sprechen is more like speak. At least I think so. So, it's like in English where it would sound much better if you said 'We need to talk'.
Basically similar meaning, but there are specific parts where one is used over the other.
Maybe this will help you: https://www.linguee.com/german-english/translation/reden.html
"Wir müssen reden." is right in this context. One would not say "Wir müssen sprechen." in German. But you can say, for example: Wir müssen darüber sprechen. (We have to speak about that.) Wir müssen über ... sprechen. (We have to speak about ...) Wir müssen etwas besprechen. (We have to discuss something.)