Foreign key not showing up in IntelliSense

I have a one-to-many relationship between LAs and LAApplications where the primary key of LAs is used as the foriegn key of LAApplications as a way of keeping track of who submits an application.

In my LA model I have a line to declare this relationship

public virtual ICollection<LAApplication> LAApplications { get; set; }

My LAs SQL Creatle table looks like

CREATE TABLE [dbo].[LAs] (
    [Id]        INT            IDENTITY (1, 1) NOT NULL,
    [FirstName] NVARCHAR (MAX) NULL,
    [LastName]  NVARCHAR (MAX) NULL,
    [UID]       NVARCHAR (8)   NULL,
    [UserId]    NVARCHAR (MAX) NULL,
    CONSTRAINT [PK_LAs] PRIMARY KEY CLUSTERED ([Id] ASC)
);

My LAApplications SQL Creatle table looks like

CREATE TABLE [dbo].[LAApplications] (
    [LAApplicationId] INT            IDENTITY (1, 1) NOT NULL,
    [SubmissionDate]  DATETIME2 (7)  NOT NULL,
    [Semester]        NVARCHAR (6)   NULL,
    [Year]            INT            NOT NULL,
    [Status]          NVARCHAR (MAX) NULL,
    [Score]           INT            NOT NULL,
    [LAId]            INT            NULL,
    CONSTRAINT [PK_LAApplications] PRIMARY KEY CLUSTERED ([LAApplicationId] ASC),
    CONSTRAINT [FK_LAApplications_LAs_LAId] FOREIGN KEY ([LAId]) REFERENCES [dbo].[LAs] ([Id])
);

Yet when I'm in the LAApplicationController and I'm looking for all LAApplications submitted by a certain LA, i.e. by saying

int currentLAId = some number;
return View(await _context.LAApplications.Where(x => x.LAId == currentLAId).ToListAsync());

Also for my modelBuilder, for these two I have

modelBuilder.Entity<LA>()
    .HasKey(l => new { l.Id });

modelBuilder.Entity<LAApplication>()
    .HasKey(la => new { la.LAApplicationId });

The LAApplications.LAId doesn't show up as an option even though I can see its in the database and is a foreign key. Does anyone know what's going on?