Any Data Network Counter Addon?

Is there any Data Network Counter where i can check my current Network Usage for example how much Gigabyte used since Powered on?

This would be great , because i watch Live content via Iptv and i have a Limitation.

It’s not a total solution but

ifconfig eth0

Will tell you how much data has been received since last boot.

Maybe netdata? CoreElec HW monitor

I had looked at that but could not see a total data on it maybe you can turn it on in the settings.

How much Ram use this little tool at all?