Here are some ways to block websites on your Mac:

1. Use Screen Time or Parental Controls and select App Limits.
2. Use Antivirus One and click on the Web tab.
3. Enter the domain names of the websites you want to block in the URL field of the Network settings.
4. Install browser extensions that disable websites.

Here are some step-by-step tutorials for each method:
- [How to block websites in Safari on a Mac](https://macpaw.com/how-to/block-websites-on-mac)
- [How to block websites on Mac | Trend Micro Help Center](https://helpcenter.trendmicro.com/en-us/article/TMKA-20708)
- [How to Block a Website in Any Browser on a Mac - MUO](https://www.makeuseof.com/how-to-block-website-any-browser-mac/)
- [How to Block Websites on Mac Easily on All Browsers 2023 - Cisdem](https://www.cisdem.com/resource/how-to-block-websites-on-mac-internet-browser.html)
- [5 Ways to Block and Unblock Websites on a Mac - wikiHow](https://www.wikihow.com/Block-and-Unblock-Internet-Sites-%28On-a-Mac%29)