The best option would be if you can get another center brace, either by getting someone's old phone that he thinks it's useless because it's dead, or you can buy it online at [link|https://globaldirectparts.com/lg-exalt-lte-vn220-verizon/|GLOBAL DIRECT PARTS|new_window=true], or on eBay, etc., the difference is going to be that buying it online it's going to be quite difficult figuring it out if you're not experienced in electricals, vs. getting it used it's %95 done, you just have to assemble the top and the bottom side to it.
Hope it's still relevant by now!!