I was wondering about passing a string to check the existence of a symbol, so I created the following function,
but all the answers were :INTERNAL, so it was useless.
I understand the reason, but does anyone know why lisp works this way?

(defun find-foo (s)
(find-symbol (symbol-name s)))

(defun find-bar (s)
(find-symbol (string s)))

• (find-foo ‘never-used-symbol)
  NEVER-USED-SYMBOL
  :INTERNAL
• (find-bar ‘still-unused-symbol)
  STILL-UNUSED-SYMBOL
  :INTERNAL