I rarely use a regex from StackOverflow. Most of the time I write my own!
I'm so proud...

Good.

Your var (about) in your profile has a syntax error.

Yep.
Most of the time I find better ways tho.
Example: IPV4 address validation in C# on Codewars.
Everyone: REGEX REGEX REGEX UNREADABLE REGEX *WON'T ALWAYS PASS THE RANDOM TEST CASES*
Me: I'll use the builtin System.Net.IPAddress to validate IPV4 addresses *passes all test cases, always, not only sometimes*