Frame Challenge: You're Focusing On The Wrong Thing
My success rate - in terms of applying for a job and it leading to a job offer - is somewhere around 4% through the course of my life. In terms of Interviews-Into-Job-Offers, it's probably around 15%-20%.
That's to say: I often fail.
But here's the big difference: when I fail, it's because I assume there was something under my control that was reason I failed. I wasn't proficient in technologies X, Y, and Z. I didn't have a good grasp on the architecture. I tried proposing a solution too fast and missed one of the secret requisites the interviewer had in mind. I didn't leave a good impression on my social skills. Etc, etc, etc.
It sucks, and it's painful to think that way... but the end result is: I work on improving myself. Social skills didn't wow them? Okay, maybe I need to do some mock interviews, or figure out a way of being less nervous. Didn't grasp the architecture? Maybe I need to play around for a few weekends poking around with the theory of MVC. Etc, etc, etc.
So take a look at your question. You had the interviews... but it didn't lead to an offer. And you immediately thought: "This can't be any fault of mine - it must be because of discrimination. How do I get them to stop discriminating?"
Sure, it might be discrimination. Or it might be because you're not a good fit for the job or are missing some aspects that they're looking for. By focusing on the former, you're not improving your career prospects for the next interview.
So let's say your next interview is with someone who positively doesn't discriminate... and the two candidates are you and me. You've brushed off every 'No' as not-your-fault; and I've taken every one of them as a sign that I need to improve my hireability.
Who do you think gets the offer between us?