Hello,

Your Apache configuration file dose not seems to be valid,

Also You can use the following command to check for syntax error:

~$ apachectl -t

If you are connecting to the server from the same local network, you might not need SSL at the end.

First: Redirecting to port 443 without a valid SSL certificate does not make any sense at all.

Do you know about Apache and proxy servers? If not, you may want to read this nice how-to: https://antiun.github.io/odoo-reverse-proxy-howto/

Do not use self-signed certificates, use Let's Encrypt certificates instead.

If you are looking for a proxy server which is very easy to use and offers automatic HTTPS, you may want to check the caddy server www.caddyserver.com.

Here you can find a french how-to: http://www.bicomm.fr/odoo-ssl-web-certificat-lets-encypt/ (funny enough this is not a HTTPS site)

Here is an english how-to: https://harkx.com/blog/2015/12/27/running-odoo-with-https/

Here an apache conf that I use with the same setup as yours, it uses Let's Encrypt.

<VirtualHost *:80>

ServerName odoo-domain.com

    Redirect permanent / https://odoo-domain.com/
    TransferLog /var/log/apache2/odoo-site.log
</VirtualHost>

<VirtualHost *:443>

ServerName odoo-domain.com
  
   ProxyRequests Off
   SSLProxyEngine on
   SSLEngine on
   SSLCertificateFile /etc/letsencrypt/live/odoo-domain.com/fullchain.pem
   SSLCertificateKeyFile /etc/letsencrypt/live/odoo-domain.com/privkey.pem

   RequestHeader set "X-Forwarded-Proto" "https"
   SetEnv proxy-nokeepalive 1
        ProxyPass / http://127.0.0.1:8069/
        ProxyPassReverse / http://127.0.0.1:8069/
   ProxyErrorOverride off
   TransferLog /var/log/apache2/odoo-site.log
   #Fix IE problem (httpapache proxy dav error 408/409)
   SetEnv proxy-nokeepalive 1
</VirtualHost>