Here watching this on an iPhone 6s Plus can’t use some apps just bc they don’t support an “older version of IOS “ also phone runs pretty slow compare

Here watching this on an iPhone 6s Plus can’t use some apps just bc they don’t support an “older version of IOS “ also phone runs pretty slow compare to what used to be years ago as we all know. I wish there was another software for us to van change usted of iOS when it’s outdated, can someone develop a linux OS version for older phones, can someone make it happen 😔 don’t know… just a wish