Chosen Solution

Hey guys. I bought a new iPhone 8 plus case to replace it. The old one is damaged. I changed it but the new one is not have a ring. I dont know its name. And cant search it. I want to put it info my new case but I cant do it. How can I put it there?

I had this problem all I did was use a toothpick and put it though the ring and put crazy glue around the ring and put it back in left it alone for a few minutes and my phone has been working fine ( don’t put too much glue to prevent it from going in the actual port