How do I prevent spammy links from coming to my website?

You can use search console's disavow option to remove bad links from the site.

The process of removing bad backlinks is relatively simple, if time-consuming:

1. Understand what makes a backlink 'toxic'
2. Use a tool to identify all bad links pointing to your website.
3. Contact the webmaster and request removal.
4. Create and submit a 'disavow' file to Google to ignore those links

Create and submit a 'disavow' file to Google to ignore those links.