An internal broken link is one of the SEO factors. To check it your site has a broken link or not and how to fix them, here the simple step:

1. To check your broken link, you can use the online tool or you can use it manually. To check it manually, here the simple step :
- type in google search column or your browser (please see attached)
- after you get results your entire link will appear in the search result, you must be clicked every link one by one to check it if the links are broken or not.

2. After you get a broken link URL, you must remove the broken link through your Google search console using these step:
- go to your search console account
- click your "removal" menu
- put your broken link in the "new request" button
- follow the step, next, next, etc.

Just check it above step regularly as your activity to maintain your site health.

Regards

Teguh Yulianto

This is a great question