GOOGLE account got hacked and only Gmail remained the same.

Hello,

I am jidze,my acc got hacked by someone from Bangladesh. I don't know how he hacked but I guess he was able to hacked because g mail and password was somewhat similar and I used the g mail name as my user name in clash of clans.he has changed my password,recovery email,recovery phone number and security phone number.If anyone out there has profession in this,plz help me out.I will be gladly waiting for my recovery.TY☺......and BTW,previous password was Jidzetho,created on April 2016 .