Dates and HTTP requests are the two things I always manipulate through libraries (no matter the language, except maybe for timestamps). It is so much simpler that way.
I am an amateur dev, though, so maybe someone who masters the language will be better off using the raw standard libraries.
Honestly, no. There are times when you want to get low level but, when you do, you need to commit to learning that domain as well as the problem domain you’re being paid to solve. If those are disjoint, well, have fun!