Setup Steps for Raspberry Pi (or VM) with 4G Dongle and Squid Proxy

Now I know a lot of people don't want to pay the stupid costs to make 4g proxies.
Or some dick writes a script then when they make money with it delete it off git hub, leave the page on their website so it gets traffic.
So I used chatgpt-4 and some basic knowledge of Debian.
And, before people get confused I used a VM workstation - found a a very simple guide on YT to install Raspi in a VM. Shit loads of YT videos on how to use VMware.
This avoids setting up routing tables and firewalls in the router - so less hassle by about 50%.
This should work 99% of the time on a physical Raspi - but you will have to do the router table stuff.

Note* Attached is a text file of the entire Chatgpt conversation. Its RAW no formatting but you may get some more help if you come across problems with your setup.
++ I like to test and debug constantly each step.

1. Next step is to make a script I can rotate on a timer. Add it as a monitored service
2. Script that can be trigger from a local machine to rotate the IP.
3. Build a Web interface to show usage etc.
4. Add more 4 dongles.

== I'll add them as I do it to this thread. ==

Theoretically you can just keep adding 4g dongles by just changing the dongles IP to a static in IP tables - we will see lol

Just to show this worked I tested it from a another Win10 VMware on the same Host machine as the VMRaspi

DEBUG:urllib3.connectionpool:Starting new HTTP connection (1): 192.168.1.136:3128
send: b'GET http://httpbin.org/ip HTTP/1.1\r\nHost: httpbin.org\r\nUser-Agent: python-requests/2.31.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\n\r\n'
DEBUG:urllib3.connectionpool:http://192.168.1.136:3128 "GET http://httpbin.org/ip HTTP/1.1" 200 49
reply: 'HTTP/1.1 200 OK\r\n'
header: Date: Sat, 10 Feb 2024 22:14:29 GMT
header: Content-Type: application/json
header: Content-Length: 49
header: Server: gunicorn/19.9.0
header: Access-Control-Allow-Origin: *
header: Access-Control-Allow-Credentials: true
header: Expires: Sat, 10 Feb 2024 22:17:13 GMT
header: X-Cache: MISS from raspberry
header: X-Cache-Lookup: HIT from raspberry:3128
header: Via: 1.1 raspberry (squid/4.13)
header: Connection: keep-alive
Successfully accessed through proxy
Response content: {
"origin": "192.168.1.244, 148.252.129.138"

148.252.129.138 - This was my 4g WAN IP