Can you give some examples of ageism in modern society?

As a senior, I’m subjected to ageism every day. Most of them occur in my family. My grandchildren think I know nothing about technology and smartphones. They always tease me and behave aggressively. The family, the neighbours, and the whole society always suppress me; because they consider me useless and senile. Whenever I decide to try something new, I hear, “you’re too old for such things.”, ” it’s funny; you’re still young at heart.” It’s so sad. I wish they were aware of their destructive behaviours.