How to Set Up a WAN Attack When Only Have a 3G Internet Connection ?

Hello guys, i am new to the "aspiring white-hat hacker/security awareness playground"...

i want to know how to set up a WAN attack with metasploit in Kali Linux,

but i have only 3G dongel and TL-MR3420 3G/4G Wireless Router ,

in my area we do not have ADSL connection or WIFI connection, we only have 3G network, So i try to set up port forwarding using my router and 3g dongle,

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but when i go to the canyouseeme.org , it says,

so i am confuse is that impossible to do port forward with my devise ,

all so is any other way to set up WAN attack with out port forward?

Is any one can make tutorial or give me a solution it's very helpful to me and lot of other viewers....thanks,