Websocket Protocol on SIM APN-CodePudding

I've internet package for only certain apps. The apps using Cloudflare as address and it's whitelisted by ISP Traffic. Since Cloudflare is Proxy and it has SSL support, it is possible to use Websocket scheme to reach the address. I've try to use v2ray Websocket to trigger my internet package and it works perfectly, now i can access regular internet without ISP limiting the bandwith outside whitelisted package.

The problem is; using v2ray Websocket requires 3rd-party VPN, and i want just plant the Cloudflare Address inside the Android APN as a proxy on 80 port. By the way, I'm using v2ray websocket on port 80, so it's should not be a problem to use it as proxy?

This is what i've tried:

Proxy: 104.18.123.3
Port: 80

It's not working, probably ISP only accept SNI

proxy: mastalabama.com
Port: 80

It's also not working. Probably also need to use protocol?

proxy: http://mastalabama.com
port: 80

Still not work,

is it really possible for us to trigger the internet package without using 3rd-party vpn and only use it inside APN?

And is it really possible to use Websocket inside APN?

Proxy: wss://mastalabama.com
Port: 80

Any help would be very appreciated.

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