If you want to check if your regular expression is going to catch what you expect it to mach you can rely on https://www.regextranslator.com as a confidence tool.
Using:
as an example a regular expression from a great regular expression guide from Bugcrowd: How to Regex: A Practical Guide to Regular Expressions (Regex) for Hackers,
Automatically you get the regular expression simple English «translation».
