How to fix Odata with C# WebAPI .NET Core Entity Framework

I can retrieve all of the data but looks like OData is not working I'm using EFCore Entity Framework Web API. This is my reference for OData https://www.youtube.com/watch?v=ZCDWUBOJ5FU

Updated Model below

Return should be

[
    {
        "name":"FakeHelmet"
    },
    {
        "name":"OriginalHelmet"
    },
    {
        "name":"ClassAHelmet"
    }
]

This is my Code.

Controller :

[HttpGet]
[EnableQuery]
public async Task<IActionResult> Get()
{
    var models = await service.Filter();
    return Ok(models);
}

Service

public async Task<IEnumerable<HelmetDto>> Filter()
{
    var models = repo.GetQueryableTest<Helmet>();
    return models.Select(x => SimpleMapper.Map(x, new HelmetDto()));
}

Repository

public virtual IQueryable<TEntity> GetQueryableTest<TEntity>()
where TEntity : class, IEntity
{
    IQueryable<TEntity> query = context.Set<TEntity>();
    return query;
}

I also added this in Startup.cs

public void ConfigureServices(IServiceCollection services)
{
        services.AddOData();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
        app.UseMvc(routeBuilder =>
        {
             routeBuilder.EnableDependencyInjection();        
             routeBuilder.
               Count().
               Filter().
               OrderBy().
               Expand().
               Select().
               MaxTop(null);
         });
}

This is my Model

public class Helmet
{
    public Helmet()
    {
    }

    public int Id { get; set; }

    public String Name { get; set; }

    public String Description { get; set; }

    public String Type { get; set; }
}

the request would be localhost:5002/api/Helmet?$select=name

The OData that I created is not working. Hoping for an answer. This is my reference for OData https://www.youtube.com/watch?v=ZCDWUBOJ5FU

Return should be

[
    {
        "name":"FakeHelmet"
    },
    {
        "name":"OriginalHelmet"
    },
    {
        "name":"ClassAHelmet"
    }
]