CosmosDB database first approach with Entity Framework Core

Question

I have recently switched to Entity Framework Core with CosmosDB. Created context and tried to pull the data from existing cosmos container.

My context looks like this:

public class CosmosContext : DbContext
{
    public string ConnectionString { get; set; }
    public string DbName { get; set; }
    public DbSet<ActivityLog> ActivityLog { get; set; }

    public CosmosContext(
            DbContextOptions options,
            string connectionString,
            string dbName) : base(options)
    {
        ConnectionString = connectionString;
        DbName = dbName;
    }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseCosmos(ConnectionString, databaseName: DbName);
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<ActivityLog>().ToContainer("ActivityLog");
    }
}

Activity log like that:

public class ActivityLog
{
    public string PartitionKey { get; set; }
    public string  CreatedDate { get; set; }
    public string  EntityID { get; set; }
    public string  ModifiedBy { get; set; }
    public string  CreatedBy { get; set; }
    public string  Action { get; set; }
    public string  Type { get; set; }
    public string  Object { get; set; }
    public string  id { get; set; }
}

Data in Azure currently is:

But when I try to query the data it's always null:

var ana = new CosmosContext(new DbContextOptions<CosmosContext>(),
                            _connectionString,
                            _databaseName);
        
var b = await ana.ActivityLog.FirstAsync();

I can create new containers just fine, however I need to work with the existing data. I'm pretty sure it's not recognized by the model binder but I cannot figure out why.