Pipeline behavior when merge request triggered

GitLab CI/CD
1

Hello!
I have one pipeline(qa, dev, stage) for several branches. For each branch I have jobs. All work great without one thing.

When my developer does a merge request, pipeline triggers jobs for all branches. For example, he runs merge request from develop to qa branch and it triggers jobs for qa, develop, stage branch. But I want to trigger jobs only for branch where merge requests are done.
How can I fix it?

Here sample of my pipe:

workflow:
  rules:
     - if: ($CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH || $CI_COMMIT_BRANCH == "develop" || $CI_COMMIT_BRANCH == "qa" || $CI_COMMIT_BRANCH == "stage") 
    - if: ($CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
      when: never

stages:
    - test
    - buildpush

.buildpush: &buildpush
  - echo "Hello, this is build"

.deploy: &deploy
  - echo "Hello, this is deploy"

Unit Tests:
  stage: test
  script:
    - test
  only:
    refs:
      - develop
      - qa
      - stage
      - pushes
    changes:
      - src/**/*



### BUILDPUSH ###
## BUILDPUSH DEV ##

Gatewaygame build DEV:
  stage: buildpush
  environment: develop   
  script:
    - export IMAGE_NAME=gatewaygame-dev
    - export PROJECT_PATH=src/GatewayGame/Dockerfile
    - export ENV_NAME=DEV
    - *buildpush   
  only:
    refs:
      - develop
      - pushes
    changes:
      - src/Common/**/*
      - src/GatewayGame/**/*
  needs:
    - Unit Tests



## BUILDPUSH QA ##

Gatewaygame build QA:
  stage: buildpush
  environment: qa   
  script:
    - export IMAGE_NAME=gatewaygame-qa
    - export PROJECT_PATH=src/GatewayGame/Dockerfile
    - export ENV_NAME=QA
    - *buildpush   
  only:
    refs:
      - qa
      - pushes
    changes:
      - src/Common/**/*
      - src/GatewayGame/**/*
  needs:
    - Unit Tests



Gatewaygame build STAGE:
  stage: buildpush
  environment: stage
  script:
    - export IMAGE_NAME=gatewaygame-staging
    - export PROJECT_PATH=src/GatewayGame/Dockerfile
    - export ENV_NAME=STAGING
    - *buildpush   
  only:
    refs:
      - stage
      - pushes
    changes:
      - src/Common/**/*
      - src/GatewayGame/**/*
  needs:
    - Unit Tests

Thanks!