Where can I find real examples of patterns (C++)?

Question

C++ / C#

Hello.
I recently read gang of four.
I want to see how the patterns look in practice.
I know for sure that the chromium code abounds with them.
But the complexity is such that I can not master it.
Recommend some simpler project where you can look at the practical implementation of design patterns (and not go crazy).
Thank you!