I've been trying to use the Rocket League API from the tracker
https://api.tracker.gg/api/v2/rocket-league/standard/profile/(platform)/(name)
When i use the link I get the stats but I want to make a small website just for fun... I have a simple form to insert username and platform but I can't make the request neither using js neither using php.
I used their API to get Fortnite and CSGO stats and it did work.
My try in JS:

const fetchPlayers = async (gamertag, platform) => {
    const api_call = await fetch('https://api.tracker.gg/api/v2/rocket-league/standard/profile/${platform}/${gamertag}');
    const data = await api_call.json();
    console.log(data);  // Error 403 forbidden
    return { data }
};

My try in PHP

function getPlayerStatsRocket($platform,$gamertag){
    echo "asd";
    $apiUrlPlayerStatsEndpoint = 'https://api.tracker.gg/api/v2/rocket-league/standard/profile/'.$platform.'/'.$gamertag;

    $ch = curl_init();

    curl_setopt( $ch, CURLOPT_URL, $apiUrlPlayerStatsEndpoint );


    curl_setopt( $ch, CURLOPT_RETURNTRANSFER, TRUE );
    curl_setopt( $ch, CURLOPT_HEADER, FALSE );
    curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );

    $response = curl_exec( $ch );
    curl_close( $ch );
    return json_decode( $response, true ); //(returning null)
}

(No api key needed)