By default, ETS2 downloads voice navigation for English, French, German, Spanish, Italian, Polish, Russian, and Turkish. Each voice pack is 50–100MB.
While the official Euro Truck Simulator 2 (ETS2) base game currently requires and has a download size of roughly 5.6 GB , some legacy or "highly compressed" versions may approach the 1GB mark. Understanding ETS2 Download Sizes
Websites offering a "1GB highly compressed" version of the full modern game should be approached with caution: Malware Risks:
We recommend this way to download app, because it has less change to your current Apple ID.
Before you update your location, you must spend your store credit, cancel your subscriptions, and get a payment method for your new country or region.
For more details, please refer this url:
https://support.apple.com/en-us/HT201389