CSRF token mismatch in iframe (The Good fix ?)

Form submission in <iframe> using laravel throwing 419 CSRF token mismatch error

I came across couple of solutions but want's a secure one

Please assist which approach is better keeping good security

• Excluding URIs From CSRF Protection https://laravel.com/docs/8.x/csrf#csrf-excluding-uris
• Extend Cookie Support for SameSite=None, Secure https://laracasts.com/discuss/channels/laravel/embedding-laravel-form-in-iframe-shows-419-csrf-token-mismatch-error

Thanks

via Chebli Mohamed