first change

app/Rules/Recaptcha.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Support\Facades\Http;
+
+class Recaptcha implements ValidationRule
+{
+    /**
+     * Run the validation rule.
+     *
+     * @param  \Closure(string): \Illuminate\Translation\PotentiallyTranslatedString  $fail
+     */
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        $gResponseToken = (string) $value;
+
+        $response = Http::asForm()->post(
+            'https://www.google.com/recaptcha/api/siteverify',
+            ['secret' => setting('recaptcha_secret_key'), 'response' => $gResponseToken]
+        );
+
+        if (!json_decode($response->body(), true)['success']) {
+            $fail('Invalid recaptcha');
+        }
+    }
+}