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I am new to MVVM. I Created Model class CandidateRegisterModel and ViewModel class CandidateRegisterViewModel

class CandidateRegisterModel: NSObject 
 let viewModel = CandidateRegisterViewModel.self
 var candidateName : String
 var email : String
 var mobileNo: Int
 var skill : String
 var location : String
 var totalExp : Int
 var designation : String
 var industry : String
 var uploadResume : String

 init(candidateName: String, email: String, mobileNo: Int, skill: String, location: String, totalExp: Int, designation: String, industry: String , uploadResume: String) 

 self.candidateName = candidateName;
 self.email = email;
 self.mobileNo = mobileNo;
 self.skill = skill;
 self.location = location;
 self.totalExp = totalExp;
 self.designation = designation;
 self.industry = industry;
 self.uploadResume = uploadResume;
 


class CandidateRegisterViewModel
 var CandidateRegisterData = CandidateRegisterModel?.self
 var candidateName : String = ""
 var email : String = ""
 var mobileNo: Int? = nil
 var skill : String = ""
 var location : String = ""
 var totalExp : Int? = nil
 var designation : String = ""
 var industry : String = ""
 var uploadResume : String = ""
 private var errors: [String] = 
 private weak var context: UIViewController?

 init(controller: UIViewController) 
 context = controller
 

 init(CandidateRegisterDataa : CandidateRegisterModel) 
 candidateName = CandidateRegisterDataa.candidateName
 email = CandidateRegisterDataa.email
 mobileNo = CandidateRegisterDataa.mobileNo
 skill = CandidateRegisterDataa.skill
 location = CandidateRegisterDataa.location
 totalExp = CandidateRegisterDataa.totalExp
 designation = CandidateRegisterDataa.designation
 industry = CandidateRegisterDataa.industry
 uploadResume = CandidateRegisterDataa.uploadResume
 
 func checkCandidateNameErrors(name:String) -> Bool 
 let RegEx = "\A\w7,18\z"
 let validator = NSPredicate(format:"SELF MATCHES %@", RegEx)
 let valid = validator.evaluate(with: candidateName)
 if !valid 
 errors.append("Invalid UserName")
 
 return valid
 
 func checkEmailErrors(email: String) -> Bool 
 let regex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]2,4"
 let validator = NSPredicate(format: "SELF MATCHES %@", regex)
 let valid = validator.evaluate(with: email);
 if !valid 
 errors.append("Invalid Email")
 
 return valid
 
 func checkPhoneErrors(phoneNumber: String) -> Bool 
 let PHONE_REGEX = "^09[0-9'@s]9,9$"
 let validator = NSPredicate(format: "SELF MATCHES %@", PHONE_REGEX)
 let valid = validator.evaluate(with: mobileNo)

 if !valid 
 errors.append("Invalid Password")
 
 return valid
 


 func checkPasswordErrors(password: String) -> Bool 
 let valid = !password.isEmpty && password.count >= 6
 if !valid 
 errors.append("Invalid Password")
 
 return valid
 
 func cleanErrors() 
 errors.removeAll()
 
 func showErrors() 
 let message = errors.joined(separator: ("n"))
 let errorAlert = UIAlertController(title: "Erros", message: message, preferredStyle: .alert)
 errorAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
 context?.present(errorAlert, animated: true, completion: nil)
 
 

extension CandidateRegisterViewModel 
 func login_model( candidateName : String, email: String, password: String, mobileNo: String)