What are my rights and what can I do besides simply not using the devices?
Sorry to say, but zero. You are part of an extreme minority of people who have an issue with these devices. The manufacturers do not care beyond a cursory level. I have been in talks directly with engineers at Apple and Microsoft, on Zoom calls with the people who code the OS, and nothing comes of it. They will toss out some ideas that you have already found to not work, they will offer their sympathies, but in the end they are not going to alter a product used by literally billions of people that is worth hundreds of billions of dollars in revenue to try and accomodate you. It isn't going to happen.
And you do not have a "right" to a pain free Windows or Apple product experience. You are 100% to not use products that cause you discomfort. I can't drive any car made after roughly 2010 because of ubiquitous addition of screens in cars. I don't have a right to tell Ford to build me a car without a screen in it. I simply am in the used car market for the rest of my life.
You need to focus on helping yourself, and carving out products and a routine that does not trigger you and keeps you healthy and pain free, and then accept those are parameters you ill need to live your life in. There is plenty of room for a fulfilling, happy life without using Windows 10 or an iPhone.