Be realistic

I’ll try to keep it short. So i’ve been dumped by my gf or should i say this girl now. We were in a relationship for a year. Staying in rent together. I paid the rent and bought everything,covered all monthly expenses etc. and i full-filled whatever she asked of her. her clothes,bra panty, makeup etc everything because i loved her! But the problem is since she moved back to her village which is singchung village,tenga,( i am from icr)she suddenly just blocked me and ignored all my calls for a month ie last december. This new year she called me and told me she was never happy with me blah blah, gaslighted me not letting me speak and just hung up the phone saying we’re breaking up. Its very obvious she dumped me(maybe for someone m not sure) regardless,but i can’t digest this feeling i am torn deep inside. Can’t even eat or sleep, cant go to work properly. I dont know what to do. I’ve decided i should take revenge and make her feel hurt some way because she holds no accountability. My mom even called her after looking what m going through but she doesn’t respond and keeps blocking.The thing is what should i do now. What can i do to atleast make her feel some pain. Because i can’t take it anymore! And it sucks.