Specific traffic monitoring

hello all,i was wondering what is the best way to monitor bandwidth being used for specific ips or application like facebook or google,etc

i would like to use l7 and other layers to view live monitoring of bandwidth

i have read online is that can be done using mangle

can you help me with a configuration for Facebook for example then i can implement on other apps and IP’s

thank u

You can use Netflow (Traffic Flow in MikroTik).

https://wiki.mikrotik.com/wiki/Manual:IP/Traffic_Flow

Isnt there simpler way using mangle.i am truly broke these days.bills are too heavy