refactor: use errors.New to replace fmt.Errorf with no parameters & fix typo

[LesCyber]

1. use errors.New to replace fmt.Errorf with no parameters
2. fix typo
3. unify the error handling methods that are different from the project style

Replaced fmt.Errorf with errors.New in cases where formatting is not required. This reduces unnecessary function calls, leading to slightly improved performance and cleaner code.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.95%. Comparing base (490539e) to head (2934572).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1653   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         337      337           
  Lines       29607    29607           
=======================================
  Hits        29595    29595           
  Misses          8        8           
  Partials        4        4           

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