Don't worry, it's easy! Just follow these 3 steps:

1. In your Tuhin810 repository, create a new folder named .github, and inside that, another folder named workflows. The final path should be .github/workflows.

2. Inside the workflows folder, create a new file named main.yml.

3. Copy and paste the code below into the main.yml file:

   name: Generate Snake Animation
   on:
     schedule:
       - cron: "0 */12 * * *" # Runs every 12 hours
     workflow_dispatch:
   jobs:
     build:
       runs-on: ubuntu-latest
       steps:
         - uses: actions/checkout@v2
         - uses: Platane/snk@v2
           with:
             github_user_name: ${{ github.repository_owner }}
             svg_out_path: dist/github-contribution-grid-snake.svg
         - uses: crazy-max/ghaction-github-pages@v2.5.0
           with:
             target_branch: output
             build_dir: dist
           env:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

After saving this file, the animation will be generated within a few minutes and will update automatically every 12 hours!