Apple Ruined My iPhone 6s Plus Functions After Launching Newer Phones

I’ve never seen anything as ridiculous as Apple making older iPhones malfunction whenever a new model is released. I’m using an iPhone 6s Plus, and yes, I know it’s a very old phone, but I can’t afford to buy a new one. I also don’t want to switch to another brand because I’m so used to using an iPhone. It feels like Apple is intentionally making older models unusable to push customers into buying new ones. This is unfair to loyal users like me who can’t upgrade frequently. Now, the home button on my phone isn’t working, Touch ID doesn’t function, and I had to enable the virtual home button. At first, it worked fine, but now even that occasionally stops responding.