How to change the language in busybox

I turned off the computer, but when I opened it again, it gave me an error: I find the solution of it,(i need to write

/dev/sda8

) however my keyboard is in russian, so i can not type anything in english. I started search about the problem and found it https://ubuntuforums.org/archive/index.php/t-1002358.html . This guy had a similar problem, so i tried it

the grub menu highlight ubuntu (NOT the recovery mode)

press e for edit

highlight the kernel line and press e for edit

added set LANG=en_us

press enter, then b to boot.

but it also did not change the language in busybox How can i change the language in busybox?