composer require pros/base

use Illuminate\Routing\Controller as BaseController;

class Controller extends BaseController
{
    // this line is to register json response convenient methods
    use ResponseTemplateTrait;

    pubic function __construct(
        protected Service $service
    ){}

    public function index(Request $request) 
    {
        $param1 = $request->get('param1');
        $data = $this->service->methodName($param1)

        // this method comes from ResponseTemplateTrait
        // it also contains jsonError and jsonSuccessNoContent methods
        return $this->jsonSuccess($data);
    }
}

class Service 
{
    pubic function __construct(
        protected Repository $repository
    ){}

    /**
    * for testing only, it can be whatever 
    */
    public function methodName($param1) : boolean
    {
        // This is for demo only,
        // you can throw new exception to avoid check error
        // here and there.
        // It helps code more readable.
        // But it doesn't limit you in returning error, both are fine
        if('a' === 'b') {
            throw new ApiLogicException('What the hell?');
        }

        // handle your code logic here and then interact with DB 
        // via repository
        return $this->repository->paramExists($param1);
    }
}

class Repostory extends BaseRepository 
{
    public funtion paramExists($param) : boolean
    {
        // $this can represents for Model, Eloquent, QueryBuilder
        // so feel free to use this as you desired
        // you also can use $this->model for same purpose. 
        return $this->where('a' = $param)->exists();
    }
}