'Bad Gateway' nginx com docker-compose

I’m new to docking on NGINX and I think I may have made some mistakes, but come on. I built my application and dockerized it normally and in the end on my own VPS I ran the ‘docker-compe up’ and got success, accessing my server’s IP on the port I mapped on nginx it works, however the problem is when I’m configuring in a DNS, follow my code to explain better:

docker-compose.yml

version: "3"

services:
  db:
    image: postgres
    restart: always
    ports:
      - "5432:5432"
    networks:
      - animes-lobby
    environment:
      POSTGRES_USER: 
      POSTGRES_DB: 
      POSTGRES_PASSWORD: 
  backend:
    build: ./backend
    command: >
      bash -c "yarn build
      && yarn typeorm migration:run
      && yarn start:prod"
    networks:
      - animes-lobby
    ports:
      - "4000:4000"
    volumes:
      - ./backend:/backend
      - ./backend/node_modules
    depends_on:
      - db
  frontend:
    build: ./frontend
    command: >
      bash -c "yarn build
      && yarn start"
    networks:
      - animes-lobby
    ports:
      - "3000:3000"
    volumes:
      - ./frontend:/frontend
    depends_on:
      - backend
networks:
  animes-lobby:
    driver: bridge

moment that I run the docker-compose up

CONTAINER ID   IMAGE                     COMMAND                  CREATED          STATUS          PORTS                              NAMES
9bb32ec92e61   animeslobbycom_frontend   "docker-entrypoint.s…"   30 seconds ago   Up 28 seconds   0.0.0.0:3000-3001->3000-3001/tcp   animeslobbycom_frontend_1
8b0f09b039e4   animeslobbycom_backend    "docker-entrypoint.s…"   36 seconds ago   Up 29 seconds   0.0.0.0:4000-4001->4000-4001/tcp   animeslobbycom_backend_1
ed14f72e9db8   postgres                  "docker-entrypoint.s…"   36 seconds ago   Up 36 seconds   0.0.0.0:5432->5432/tcp             animeslobbycom_db_1

as mentioned, now I can access it via IP: PORT and it works perfectly, but when I do my virtualhost configuration:

server {
        listen 80;

        server_name animeslobby.com www.animeslobby.com;

        location / {
                proxy_http_version 1.1;
                proxy_cache_bypass $http_upgrade;

                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-Proto $scheme;

                proxy_pass http://localhost:3000;
        }
}

I have as a Bad Gateway return in the domain response, someone who has been through this, can you help me?