How do I use the result of fetch() multiple time without it becoming undefined? (new to JS)

I have some basic code that uses fetch() to get a json from an api. Then I "sort" (idk if thats the right word) through the "layers" (again don't know the word) to get (for example) the number of kills they have gotten in a certain gamemode on a minecraft server. The problem is I would like to check another stat, for example games played. I can't just get the data from the api again because you can only get data on each player once per minute. The problem is when I try to use the result from the fetch() again it doesn't work as the promise has been fulfilled I think (I am really new to Java Script). Here is the code:

<body>
    <form>
        <label for="fname">Username:</label><br>
        <input type="text" id="username" name="username"><br>
    </form>

    <p class="costs" id="kills">Hello!</p>

    <script>
        function BedwarsKills() {
            var queryString = location.search; // Returns:'?q=123'
            let params = new URLSearchParams(queryString);
            let q = params.get("username"); // is the number 123
            console.log(q)

            url = "https://api.hypixel.net/player?name="+q+"&key=d3a8fade-b2e6-4a3b-8239-e11a1c9a52d4"
            console.log(url)
            fetch(url)
                .then(response => response.json())
                .then(data => data.player.stats.Bedwars.kills_bedwars)
                .then(data => document.getElementById("kills").innerHTML = q + " has " + data + " kills")
        }
        BedwarsKills()
    </script>       
</body>

Just to clarify I would like to add something else like these 2 lines

                .then(data => data.player.stats.Bedwars.kills_bedwars)
                .then(data => document.getElementById("kills").innerHTML = q + " has " + data + " kills")

but using wins_bedwars in the place of kills_bedwars using the same fetch thing. Any ideas?

(let me know if you need to know anything else)

Solution

You shouldn't use two .then() calls for synchronous functions. You can achieve the same with a single callback function and a local variable:

fetch(url)
.then(response => response.json())
.then(data => {
     const kills = data.player.stats.Bedwars.kills_bedwars;
     document.getElementById("kills").innerHTML = q + " has " + kills + " kills");
});

You can easily put multiple statements in the function - as many as you want, including some for wins_bedwars in addition to those for kills_bedwars.