more than 3 tables relationship

Hello, I'm new to Laravel and I watched some videos about eloquent relationships but am still confused about the relationship with more than 3 tables. Please help me

• in my case I tried to build it system with store movement for every item and make maintenance for items with 3 store movement (issued, received, returned) and every movement related to the department with the employee, and item at this point everything is done.

• in case this item needs maintenance

  • I made 4 table

    1. maintenances table with these columns

       • id
       • item_id
       • store_id
       • status_after_maintenance
       • maintenance_date

    2. repairs table with these columns

       • id
       • repair_name like (hardware and software)

    3. tools table with these columns

       • id
       • repair_id ex: (1) refer to hardware
       • tool_name ex: (hard disk)

    4. maintenance_repair_tool table as a pivot with these columns

       • id

       • maintenance_id

       • repair_id

       • tool_id

       • I will pass this data (repair_id's and tool_id's) from blade file while store the maintenance

/*Maintenance  Model*/
class Maintenance extends Model
{
  
    public function repairs()
    {
        return $this->belongsToMany(Repair::class, 'maintenance_repair_tool','maintenance_id','repair_id','id','id');
    }
  public function tools()
    {
        return $this->belongsToMany(Tool::class, 'maintenance_repair_tool','maintenance_id','tool_id','id','id');
    }
}

/*Repair  Model*/
class Repair extends Model
{

   public function all_tools()
    {
        return $this->hasMany(Tool::class, 'repair_id', 'id');
    }
    public function maintenances()
    {
        return $this->belongsToMany(Maintenance::class, 'maintenance_repair_tool','repair_id','maintenance_id','id','id');
    }

    public function tools()
    {
        return $this->belongsToMany(Tool::class, 'maintenance_repair_tool','repair_id','tool_id','id','id');
    }
}

/*Tool  Model*/
class Tool extends Model
{

    public function repair(){
      return $this->hasOne(Repair::class,'id','repair_id');
   }
    public function maintenances()
{
        return $this->belongsToMany(Maintenance::class, 'maintenance_repair_tool','tool_id','maintenance_id','id','id');
    }
public function repairs(){
        return $this->belongsToMany(Repair::class, 'maintenance_repair_tool','tool_id','repair_id','id','id');
    }
}