“Eventually, Russia will win, albeit letting its boys die in a 7:1 ratio”
The BBC Mediazona joint (generally pro-Ukrainian) project counting Russian casualties has an interesting website: https://en.zona.media/article/2022/05/20/casualties_eng
For the Ukrainian casualties, a tight lid is kept on their losses. The numbers stated by Zelensky a few months ago are pretty much universally acknowledged to be wildly low.
I personally don’t see any reliable evidence that the Russian daily casualties are exceeeding the Ukrainian ones, let alone by a 7:1 margin.
I suggest you use Google.