I am working on website optimization and website speed, my all code is optimized very well, but i have problem in google insights tool, this tool show lot of errors because of one google captcha and one youtube video is embedded, i want google insights to ignore external domain errors and focus on main website assets and content only.
Already optimized the main content and assets.
I'd remove the youtube embedded video and google captcha, cache / purge everything, and then run the insights tool again. That should eliminate those 2 issues and show you if you got other ones.
I'd also suggest taking their recommendations with a grain of salt. There is another tool that you should use https://www.thinkwithgoogle.com/feature/testmysite/ which will test the mobile speed - and that's the one that matters more.