How do I implement HTML script in Laravel Blade?

I am trying to make a registration form where different options become available depending on the radio button selected. However when i try what i can find on the internet i get an error. For the HTML part i use:

<input type="radio" id="Swimmer" name="userType" value="swimmer" onclick="swimmerCheck()">
<label for="Swimmer">Swimmer</label><br>
<input type="radio" id="Coach" name="userType" value="coach">
<label for="Coach">Coach</label><br>
<input type="radio" id="Admin" name="userType" value="admin">
<label for="Admin">Admin</label><br>

<div id="fedNumber" style="display: none;">
<x-label for="federation_number" value="{{ __('Fed Numb') }}" />
<x-input id="federation_number" class="block mt-1 w-full" type="text" name="federation_number" :value="old('federation_number')" autofocus autocomplete="name" />
</div>

And at the bottom, for the script i use:

@push('script')
<script>
console.log('hello');
function swimmerCheck() {
if (document.getElementById('Swimmer').@checked(true)) {
 console.log('Checked');
}
 else console.log('Not checked');

}
</script>
@endpush

But when i press the button and look at my console, it gives an error regarding the onclick, saying it can’t read the properties.

I have made sure that the @Stack(‘script’) is also in the external style and the ‘Hello’ console log does work, so the script does really get through.