A tip: Do not use "E eu" and "Nós" one after the other. The two mean the same, but it may happen that one of them does not fit the same sentence, as is your case. Your sentence does not fit with "Nós" but "E eu". "E eu" is usually used to refer to you and someone else, for example: "Ana e eu saímos ontem." "E eu" can also be used to refer to more than you are someone else, example: "Ana, Victor e eu saímos ontem." We use "Nós" to refer to many people who are too lazy (😂) to speak everyone's names. Example: Let's assume that Victor left with his nine friends, so he doesn't need to say everyone's name: "Nós saímos ontem." Although I have said in the previous explanation that "Nós" is used to refer to many people, it can also refer to two. Example: Let's assume that Victor went out with his friend Ana yesterday, he says: "Nós saímos ontem." Referring only to him and Ana. P.S: I feel that my explanation was not so clear, but I hope that I could understand something. You are doing very well, Portuguese is really difficult, congratulations on the effort and good studies!