Search Strings to find Location Targeted Directories

Here are a few search strings using which you can find geo baed directories:

city + directory
directory + city
submit my site + city
niche + city + directory
city + directories

Add your site to cotid.org the coolest of website directory for free! This site is listed under Education and Training Directory

Broken Links Finding Sites

Sites listed below are helpful in finding the broken links, you can use one or all the following:

Screaming Frog SEO Spider
Siteliner
Google Search Console
Ahrefs