You could also look to start your own business to not require the approval of any hiring committee. Customers are not going to care, and you can probably get them to buy into your product/service without them even knowing much about you, let alone your age.

The difference between being hired into a business and working on your own is that you'll have to create stability on your own, but the benefits seem worth it.

Making a change like that probably takes time to adapt, but fuck me if I ever fail to make use of the skills I've honed throughout my whole life and that I know are useful for people. One just has to bridge the gap between what one can provide and what people need. If someone gets in the way of that because of their own misjudgments, sidestep them and prove them wrong!