Why don't redirects with language conditions work in Netlify?

Question

URL Handling

I'm trying to set up redirects via netlify.toml
Expected behavior on the main page /:

• User with any browser language is redirected to/en/
  
• The user with the Russian language of the browser is redirected to/ru/
  

Current behavior:

• All users are redirected to/en/
  

Mine netlify.toml(I quote in full so that there is more information, the redirects of interest are the last 2 sections):

[build]
  command = "yarn build"
  functions = "functions"
  publish = "dist"


  from = "/register"
  to = "https://domain.tld/register"


  from = "/login"
  to = "https://domain.tld/login"


  from = "/"
  to = "/ru/"
  conditions = {Language = ["ru"]}


  from = "/"
  to = "/en/"

I tried to configure through the file _redirects, but through it it did not work at all