When I read message in a perticular chat it’s working but I can not read all chat list

import {
  collection,
  addDoc,
  serverTimestamp,
  query,
  orderBy,
  onSnapshot,
  getDocs,
} from "firebase/firestore";
import { db } from "./firebase";

export const getMessages = () => {
  const messagesRef = collection(
    db,
    "envs/PROD/hotels/Hotel_001/chats/Chat_001/messages" '// this is working
  );
  const q = query(messagesRef);
  return onSnapshot(q, (snapshot: any) => {
    const messages = snapshot.docs.map((doc: any) => ({
      id: doc.id,
      ...doc.data(),
    }));
    console.log(messages); // [{text: 'hi'}, {text: 'great'}...]
  });
};

export const getChats = () => {
  const messagesRef = collection(
    db,
    "envs/PROD/hotels/Hotel_001/chats" '// this is not working
  );
  const q = query(messagesRef);
  return onSnapshot(q, (snapshot: any) => {
    const messages = snapshot.docs.map((doc: any) => ({
      id: doc.id,
      ...doc.data(),
    }));
    console.log(messages); // []
  });
};