Please add a cookie system that redirects user if user has once visited this index.html which checks user's location. So if user visits the site again, user will be able to see with the correct language without waiting
<!DOCTYPE html>
<html lang="ko">
<head>
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    <title>수원기독국제학교 | Suwon Christian International School</title>

    <!-- Schema.org Structured Data -->
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            "@context": "https://schema.org",
            "@type": "WebSite",
            "name": "수원기독국제학교",
            "alternateName": ["Suwon Christian International School", "SCIS", "수원기독학교", "기독학교", "수원학교"],
            "url": "https://www.swcis.kr",
            "logo": "https://www.swcis.kr/assets/images/logo.png",
            "address": {
                "@type": "PostalAddress",
                "streetAddress": "학교 주소",
                "addressLocality": "수원시",
                "addressRegion": "경기도",
                "postalCode": "16668",
                "addressCountry": "KR"
            },
            "telephone": "031-548-2198",
            "email": "scis@outlook.kr",
            "description": "수원기독국제학교는 기독교 가치관을 바탕으로 글로벌 리더를 양성하는 국제학교입니다.",
            "educationalAlignments": "기독교 교육, S.O.T., A.C.E. 교육과정",
            "teaches": ["기독교 교육", "영어", "수학", "과학", "사회", "예술"],
            "areaServed": "수원시",
            "image": "https://www.swcis.kr/assets/images/logo.png"
        }
    </script>
    
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    <link rel="icon" href="/favicon.ico" type="image/x-icon">
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        })(window,document,'script','dataLayer','GTM-PLV5TKBK');</script>
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    <!-- Essential Meta Tags -->
    <meta name="robots" content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1">
    <meta name="author" content="수원기독국제학교">
    <meta name="description" content="Christian Education for Faithful Servants! 수원기독국제학교 홈페이지에 오신것을 환영합니다.">
    <meta name="keywords" content="수원기독국제학교, 기독교 교육, 국제학교, 수원, 기독교 지도자, 기독교 가치, 국제 교육, 영어 교육, 글로벌 교육, 기독교 학교, 사립학교, S.O.T. 교육, A.C.E. 교육, ACE 교육">
    
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    <meta property="og:type" content="website">
    <meta property="og:title" content="수원기독국제학교 | Suwon Christian International School">
    <meta property="og:description" content="Christian Education for Faithful Servants! 수원기독국제학교 홈페이지에 오신것을 환영합니다.">
    <meta property="og:url" content="https://www.swcis.kr">
    <meta property="og:site_name" content="수원기독국제학교">
    <meta property="og:image" content="https://www.swcis.kr/assets/images/logo.png">
    <meta property="og:locale" content="ko_KR">
    <meta property="og:locale:alternate" content="en_US">
    
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    <meta name="twitter:title" content="수원기독국제학교 | Suwon Christian International School">
    <meta name="twitter:description" content="Christian Education for Faithful Servants! 수원기독국제학교 홈페이지에 오신것을 환영합니다.">
    <meta name="twitter:image" content="https://www.swcis.kr/assets/images/logo.png">
    
    <!-- Language Alternatives -->
    <link rel="alternate" hreflang="en" href="https://www.swcis.kr/en/">
    <link rel="alternate" hreflang="ko" href="https://www.swcis.kr/ko/">
    <link rel="alternate" hreflang="x-default" href="https://www.swcis.kr">
    <link rel="canonical" href="https://www.swcis.kr">
    
    <!-- Preconnect to required origins -->
    <link rel="preconnect" href="https://www.google-analytics.com">
    <link rel="preconnect" href="https://www.googletagmanager.com">

    <!-- Language Redirect Script -->
    <script>
        function redirectBasedOnGeolocation() {
            try {
                fetch('https://ipapi.co/json/')
                    .then(response => response.json())
                    .then(data => {
                        const country = data.country_code;
                        const path = country === 'KR' ? '/ko/' : '/en/';
                        window.location.href = path;
                    })
                    .catch(() => {
                        window.location.href = '/ko/';
                    });
            } catch (error) {
                window.location.href = '/ko/';
            }
        }

        window.onload = redirectBasedOnGeolocation;
    </script>
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<body>

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    <header>
        <img src="https://www.swcis.kr/assets/images/logo.png" alt="수원기독국제학교 로고" width="100" height="100">
        <h1>수원기독국제학교 | Suwon Christian International School</h1>
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            <div class="language-selection">
                <h2>언어 선택 | Language Selection</h2>
                <p>자바스크립트가 비활성화되어 있습니다. 수동으로 언어를 선택해주세요:</p>
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