Very sorry to hear your bad news Dusan. I think most of us will have been there at some time and it seems like the end but in fact it is the beginning of a long process. I know it's hard to look to the positives .
It is even worse that your backup has probably gone along with your computer. However I am sure that the guys on this forum will bend over backwards to help you when it comes to obtaining or restoring files. If I can help, you only have to ask.