How to: How to make Powerlevel10k look like robbyrussell Oh My Zsh theme?
Use [this config](
  https://github.com/romkatv/powerlevel10k/blob/master/config/p10k-robbyrussell.zsh).

You can either download it, save as `~/.p10k.zsh` and `source ~/.p10k.zsh` from `~/.zshrc`, or
source `p10k-robbyrussell.zsh` directly from your cloned `powerlevel10k` repository.