Hello , sorry about your problems. My name is Marco and I will do my best to help you.
Ensure your network on your laptop, (You have already configured your mobile hotspot like this) is set as metered in Windows 11 to restrict background data usage and prevent automatic app updates and downloads. This setting is crucial for managing data consumption on metered connections.
To do this:
Step 1: Press Windows + I to open the Settings app.
Step 2: On the left pane, click Network & Internet, then click the Wi-Fi option.
Step 3: Expand your connection.
Step 4: Toggle on the Metered connection option.
Even if you are not actively downloading or uploading, there could be background processes on your laptop that are using data. This includes services like cloud synchronization, email clients checking for new messages, or other apps that communicate with servers in the background.
The intervals at which data usage is reported and updated can vary between your mobile service provider and your laptop. Your mobile might update in real-time or at specific intervals, while your laptop might have a different schedule for updating the data usage stats.
Or, there could be bugs or issues with the software on your laptop that tracks data usage, leading to inaccurate reporting.
The way data is measured and reported can differ between devices. For example, overhead data such as headers, retransmissions due to poor signal, or encryption might be counted on one device but not the other.
And If you are using a VPN on your laptop, it might cause additional data overhead due to encryption, which might not be reflected in the laptop's data usage statistics but could be counted by your mobile hotspot.