It is a mid range phone. So sadly iam sure there isn't a lot of jump on making custom accessories for it and you are looking at general ones that are for a range of devices.
That's rough you're having trouble with the accessories sharpboy.
The manufacturer would be the last resort for finding covers and screen protectors that'll work for you. Since there aren't any on LG's site, they may be expecting you try what you've already done and test out accessories that'll fit most LG phones. I know that's not the best answer, but I don't see any other option to get you a more customized case and screen protector for this phone.