Design pattern for decouple service layer with controller layer best practice Spring boot

I have a multiple services in my layer service, i have to execute some methods but each method in different service.

MyLastService have a lot of functions and Autowired services example of my MyLastService service :

@Service
class MyLastServiceImp implement MyLastService{
  @Autowired
  ProductService productService;

  @Autowired
  OrderService orderService; 

  @Autowired
  UserService userService;

  @Autowired
  ReferentialService referentialService;

  void addNewOrder(MyRequest req) {
    try {
     Product p = productService.findProduct(req.getProductId());
     User u = userService.findUserByUserName(req.getUserName()); 
     City c = referentialService.findCity(req.getCity());
     orderService.addOrder(p, u, c);
   }
    catch(Exception e) {
      LOGGER.error("error : {}", e.getMessage());
    }
  }
}

I am not satisfied with this implementation, beacause i will have a lot of other services and make all in one service MyLastService can make my code difficult to read and maintenable. That why i search currently a design pattern for my application.

What can happen to MyLastService if i put all other services into him ?
My idea now is to add new layer but i don't know what ?
Any one can propose to me the best practice for this use case ?