How to parse a class in regular expressions?

Question

Regular Expressions

Hello everyone, how to parse a class in regular expressions if it is not in all places?
Here is the html example

Here is the written code
https://regex101.com/r/ea70gt/1
The code works fine when I remove the class=\"(.+?)\", however it does not parse the class, and when I add the class it does not work because for the fact that not all places have a class.
How to solve this issue?

Answer 1

use XPath and don't force the brain.

Answer 2

if I start redoing it again, a lot of time will pass

You don't need to parse anything with regular expressions. There are a bunch of libraries for parsing dom. No matter how much time it takes (and it will take much less time than you spent on regular seasons), redo it.