I’m sorry your mother isn’t there for you the way you would like her to be. It’s not easy to be a parent. Often it isn’t until one is a parent themselves that they realize how challenging it really is. Children think their parents know more than they really know. Most don’t realize that their parent is still learning and trying to figure things out themselves.
I think unaluna made some important points. It sounds like your mother is experiencing a sense of personal failure because she suffered important losses.
I personally can see how things are so different now where people have access to so much more information then when I was younger. With that alone you will have advantages your mother never had.