r/Crickets

Indiana. I accidentally took 2 of this guys legs off while catching him and now he can't hop very far. He had 2 buddies in his enclosure. One of them died and I've released the other one since they've seem to be doing great. I've found the half eaten carcass of his dead friend and I'm wondering if I'm not giving them the right things to eat. I've given him a piece of a bell pepper one night and it wasn't even touched, then I gave him a tomato but removed it after finding out that it could be potentially harmful. So now he's got a small chunk of watermelon in his enclosure, along with some dirt, grass, dead leaves, sticks, and a shell. Today I also discovered that he is missing part of his anntenna is missing and of there's anything I can do to help with that or prevent further damage.

Tldr: what type of cricket is this, and how do I take care of it?