Until you have an SSL certificate installed and configured on your web server, your website will only support HTTP connections. If you want HTTPS connections, you gotta get an SSL certificate. Browsers do not automatically upgrade HTTP connections to HTTPS without the website being properly configured with HTTPS using an SSL certificate. I think Brave browser upgrades HTTP to HTTPS automatically, but the issue you’re most likely experiencing is you trying to use an HTTPS link without an SSL certificate. Hope that helped.