iPhone 6 wiggly home button

I've purchased an iPhone 6 that had a wiggly home button. It was loose to he point that touch ID didn't work at all - putting your finger on the sensor didn't do anything. I used double sided tape on the part of the screen where the home button gasket goes o try and make it stick better, but even though it was noticebly less loose and I could actually get through the touch ID setup, when I tested it when the phone was locked it didn't work at all no longer how many positions I put my finger in. Is there anything I can buy in order to make the button like new? Like adhesive or a gasket that comes with adhesive pre-applied. any help is appreciated.