How to Use Async/Await With Callbacks [Javascript, Mongoose]

I have 3 async functions:

ToDoItem.deleteMany({}); // deletes entire collection
ToDoItem.insertMany(itemArray); // adds new items to collection
ToDoItem.find({}); // finds all the items in the collection

This code alone doesn't work well, as they do not follow a consistent order. I.e. the insertion might happen before deletion, which I do not want.

I can use callbacks to chain them together (callback hell), and I can also use .then to chain them together, as they return promises. However, I would like to use async/await.

Additionally, these functions can be given optional callbacks, for instance:

ToDoItem.find({}, (data) => { 
  console.log(data); 
});

This is useful as I want to see all the data in my DB that matches the query {} (which is all items).

However I can't figure out how to access these callbacks by using async and await. I can do it via callbacks or .then, but the code is more messy. Is there a way to do this?

Edit:

As per Bergi's reply, I have edited my code as such:

async function setupDatabase() {
  const deleteResult = await ToDoItem.deleteMany({});
  console.log("Items deleted. Delete result:")
  console.log(deleteResult);

  const insertResult = await ToDoItem.insertMany(defaultItems);
  console.log("Items have been added successfully");
  console.log(insertResult);

  const findResult = await ToDoItem.find({});
  console.log("Here are the items:")
  console.log(findResult);
}

Am I correct in thinking that:

1. deleteResult will now evaluate to be either the deletion confirmation (if successful) or the error (if rejected). And similarly with insertResult and findResult?

2. What do I do if I want to return the collection found by .find({}), as the function setupDatabase is now async and returns a promise.

3. If 1) is correct, how do I separate out when I'm getting an error and when I'm getting a result?

As per Konrad's response, I have done the following:

async function setupDatabase() {
  const deleteResult = await ToDoItem.deleteMany({});
  console.log("Items deleted. Delete result:")
  console.log(deleteResult);

  const insertResult = await ToDoItem.insertMany(defaultItems);
  console.log("Items have been added successfully");
  console.log(insertResult);

  const findResult = await ToDoItem.find({});
  console.log("Here are the items:")
  console.log(findResult);

  return findResult;
}


app.get("/", function(req, res) {
  (async function() {
    const objectList = await setupDatabase();
    let dataList = [];
    
    for (element of objectList) {
      dataList.push(element.todo);
    }
    res.render("list", {listTitle: "Today", newListItems: dataList});
  }());

My idea was to return the findResult inside the setupDatabase function. But this is actually a promise since the function is async, so I wrapped it in an IIFE inside the .get. I then iterated over this list and created dataList which has the actual data I want to render.