Is it difficult to sing well?

Maybe for some it's difficult, but personally, I don't think so. As I said, I had some voice lessons in the past that taught me how to sing properly, so I could sing better and protect my vocal cords. Once people know those important singing techniques, they will no longer have any difficulty singing.

Yes, I consider that singing well is not easy. You need a good voice and a lot of practice. Some people are naturally good at singing, but others have to work hard to improve. It depends on the type of song you sing.