Route Http to HTTPS in Elastic Beanstalk for external DNS provider

Hi, I'd like to use HTTPS with a subdomain to access the deployed application on Beanstalk, As an organization, we have a domain (dektech.com.au) from an external DNS provider, we simply want to use https://metadesk.dektech.com.au instead of the BeanstalkURL **https://metadek-desk-booking-env.eba-ybmik2yt.eu-north-1.elasticbeanstalk.com/ **

I've done the following steps:

1. Create a certificate and validate the domain for both dektech.com.au and *.dektech.com.au
2. Add a listener (port 443 , HTTPS , attach SSL certificate ) In the Load Balancer of the Beanstalk environment.
3. Add a process (port 443 , HTTPS, https code 200) In the Load Balancer of the Beanstalk environment.
4. Edit HTTP:80 listener in EC2 > Load Balancer and remove the default and set Redirect to HTTPS:443.
5. Create a hosted zone for dektech.com.au then create a new record Record name:metadesk.dektech.com.au , Route traffic to: Alias to Apllication and Classic Load Balancer After applying all the above settings, I still can't see access my application by https://metadesk.dektech.com.au

My question: -Do I really need to use Route 53 to route the traffic to the application load balancer since the DNS provider isn't AWS? -If so, What additional configuration might be needed to enable HTTPS properly? Thanks in advance.