How I can search text in files. As
vimgrep command in vim?
Use :grep command, it's similar to :vimgrep.
is there a way to see previews when navigating through the list? like a view pane?
No, but you can press v while in that menu to open Vim with the list of results loaded into its quickfix list where you can use commands like :cnext, :cprev, etc.