Where do you find new recipes?

Sometimes YouTube, sometimes cookbooks, and sometimes if I go to a restaurant and if there's a particular dish I like I'll just ask. Most places are happy to tell you. For all though if there's something that I think it could be better I'll just experiment and add or remove stuff.

Serious Eats. America's Test Kitchen. Cookbooks from the library.

There is https://based.cooking/ but the quality of instructions is hit or miss.

Mostly just google / duckduckgk, then choose from those results.

Mostly my wife finds them, these days mostly in the NY Times.