Hello, there is another way to reduce data usage. You can route outgoing traffic through your home Wi-Fi. Some services offer the option of Wi-Fi Split.
How mobile proxies work: Websites are accessed by the phone using mobile internet, then the content from the phone is sent to the server. The incoming speed of the mobile internet determines the website loading speed. The outgoing speed is responsible for the speed of data transfer to the server.
By sending traffic through Wi-Fi instead of mobile internet, normal data usage is maintained on the SIM card. This way, there is no double consumption of data.