I am not your age yet and do not know you personally but here are some of the suggestions that you might find it useful:

1. know your own value and scale up, usually 50s will be aiming for senior leadership role

2. build more rapport and professional connection, every opportunity counts

3. know more younger generations and mix well with them, they are usually smarter (according to scientific research)

4. you can try the entrepreneur road but it's not going to be easy

5. people can give you advise or criticism but it's up to you interpret and to take action

6. you cannot stop others of how they judge you but you can regulate your emotions when being judged


summary: it's your life, it's your choice, may you find some light at the end of the road