get the default value of select one menu

I have two classes where the mapping is:

User *--------------------1 Sexe

I have the list of users on list-users.component.html. After selecting one user for modification, I'll be redirected to modify-user.component.html

Bellow are the required files: * the list-users.component.html is:

<table class="table">
    <thead>
        <tr>
            <th>Id</th>
            <th>Name</th>
            <th>Sexe</th>
        </tr>
    </thead>
    <tbody *ngIf="!loader">
        <tr *ngFor="let user of userbs | async" style="width: 1500px;">
            <td>{{user.id}}</td>
            <td>{{user.name}}</td>
            <td>{{user.sexe.libelle}}</td>
        </tr>
    </tbody>
</table>

where userbs is obtained by using the service userService.getUsersList() with the type Observable<User[]>.

the modify-user.component.html is:

<form [formGroup]="editForm" (ngSubmit)="onSubmit()">

    <div class="form-group">
        <label for="name">Name</label>
        <input type="text" formControlName="name" placeholder="Name" name="name" class="form-control" id="name">
    </div>

    <div class="form-group">
        <label for="name">Sexe</label>

        <select (change)="onChangeSexeName($event)" class="form-control select2" style="width: 100%;">
            <option *ngFor="let sexe of sexes" [ngValue]="sexe" [selected]="selected">{{sexe.name}}</option>
        </select>
        ==> Original Sexe: {{selectedSexeUserCompare.name}}
    </div>

    <button class="btn btn-success">Update</button>
</form>

and modify-user.component.ts is:

export class ModifyUserComponent implements OnInit {
    editForm: FormGroup;
    submitted = false;
    private selectedSexe;
    users: Observable<User[]>;
    libelleSexe: string;
    usrId: String;
    selectedSexeUserCompare = { num: localStorage.getItem("selectedSexeId"), name: localStorage.getItem("selectedSexeName") }
    sexeName: String;

    sexes: Array<Object> = [
        { num: 1, name: "Female" },
        { num: 2, name: "Male" }
    ];

    compareFn(a, b) {
        console.log(a, b, a && b && a.num == b.num);
        return a && b && a.num == b.num;
    }

    constructor(private formBuilder: FormBuilder, private router: Router, private userService: UserService) { }

    ngOnInit() {
        this.sexeName = localStorage.getItem("sexeLibelle");

        let userId = localStorage.getItem("editUserId");
        this.usrId = localStorage.getItem("editUserId");
        if (!userId) {
            alert("Invalid action.")
            this.router.navigate(['users-list']);
            return;
        }

        this.userService.getUserEntityId(+userId).map(se => se.sexe.libelle).subscribe((response) => {
            this.libelleSexe = response;
            localStorage.setItem("sexeLibelle", this.libelleSexe);
        });

        this.editForm = this.formBuilder.group({
            id: [],
            name: ['', Validators.required],
            username: ['', Validators.required],
            email: ['', Validators.required],
            password: ['', Validators.required],
            age: ['', Validators.required],
            active: ['false']
        });

        this.userService.getUserId(+userId).subscribe(data => {
            this.userService.getUserEntityId(+userId).map(se => se.sexe.libelle).subscribe((response) => {
                this.libelleSexe = response;
                let sexe = this.userService.getSexeByLibelle(this.libelleSexe);
                localStorage.setItem("sexeLibelle", this.libelleSexe);
                this.editForm.patchValue(data);
            });
        });
    }

    onChangeSexeName($event) {
        this.selectedSexe = $event.target.options[$event.target.options.selectedIndex].text;
    }

    onSubmit() {
        this.userService.updateUsera(this.editForm.value, this.selectedSexe).subscribe(data => {
            this.router.navigate(['users-list']);
        },
            error => {
                alert(error);
            });
    }
}

On modify-user page, I get usually the first sexe libelle of the list of sexes (Female, Male) and NOT the correct sexe libelle, exactly like this screenshot displayed.

Could you please help me solving that issue ?. Thanks a lot.