My website got hacked two times in a row

Hi, my website was hacked second time by some polish freaks. It was hacked a wile ago but i used mackup and it looked normal, but it lasted only for a week and then it got hacked again. Hosting provider support told me that there must be a problem with wordpress or plugins that i am using.
Here is a link: https://superbonuspoker.ru/
I am not sure if it is safe for you to view it there might be some virus or something…
All i know is that my website is broken, wordpress files are ok but i can’t login in admin panel. I have backup but since it didn’t work for the first time i assume it will not solve the problem.

I don’t know what to do, so i am here waiting for your help guys.