Access Area account Controller in ASP.Net Core

Hi all.

I have a problem i solved for 2 years ago. But now i can't figure it out.

I have a page with a side menu. This side menu is the same when you are logged in. Here there is your full name, your position, companyname etc. But how can i do this? Since I created a new project in VS 2022, I now use .net 7 and I can't access the Area account controller, so i had to create an Account controller.

Account.cs

[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Login(LoginViewModel model, string returnUrl = null)
{
    ViewData["ReturnUrl"] = returnUrl;
 
    if (ModelState.IsValid)
    {
        var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);
 
        if (result.Succeeded)
        {
            // Get the user
            var user = await _userManager.FindByEmailAsync(model.Email);
            if (user != null)
            {
                // Retrieve full name and position
                string fullName = user.FullName;
 
                var myCompany = _context.Company.Find(user.CompanyID);
                var myPosition = _context.Position.Where(p => p.PositionId == user.PositionId).SingleOrDefault();
                var myDepartment = _context.Department.Where(p => p.DepartmentId == user.DepartmentId).SingleOrDefault();
 
                Viewbag.PositionName = myPosition.PositionName;
                Viewbag.CompanyName = myCompany.CompanyName;
                Viewbag.DepartmentName = myDepartment.DepartmentName;
 
 
 
                if (string.IsNullOrEmpty(returnUrl))
                {
                    // returnUrl is null or empty
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    // returnUrl is not null or empty
                    return LocalRedirect(returnUrl);
                }
            }
        }
        ModelState.AddModelError(string.Empty, "Invalid login attempt.");
    }
 
    TempData["Message"] = "Something fault happened during Login!";
    // If we got this far, something failed, redisplay the form
    return View(model);
}

_Loggedin.cshtml

<div class="page-wrapper chiller-theme toggled">
 
    @await Html.PartialAsync("_Sidemenu")
    <!-- page-content" -->
    <main class="page-content">
            @RenderBody()
        <footer class="footer">
            test
        </footer>
    </main>
    <!-- page-content" -->
</div>

_sidemenu.cshtml

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager
 
@{
    // Get the current logged-in user
    var user = await UserManager.GetUserAsync(User);
    var userloggedin = user;
    string fullName = user?.FullName;
    string positionName = viewbag.PositionName
}

This doesn't work!

Can anyone please help?