title: Mongodb: $filter is not allowed in this atlas tier
body: <p>I run a query that return an array of users through an aggregation. In order not to return the document of the user performing the query, I added a $filter on his id. But I receive the following error: </p>
  
  <blockquote>
    <p>$filter is not allowed in this atlas tier.</p>
  </blockquote>
  
  <p>I am connected to a free MongoAtlas cluster. Here is my code.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code> User.aggregate([
          { $filter: { _id: { $eq: id } } },
          {
            $match: {
              jobs: { $in: jobs },
             age: { $gte: minAge, $lte: maxAge },
            },
          },
        ]).exec((_, data) =&gt; res.json({ data }));</code></pre>
  </div>
  </div>
  </p>
  
  <p>How to fix this?</p>