Default [Q] Looking for help

So I know realize i shouldn't have attempted rooting or flashing but thats all hindsight. I'm before even a noob but hoping you guys can help me out.
Currently have a m8 att that I think is savable but I cannot figure out what to do next. I never made a backup and I'm stuck without a rom installed. I believe it is rooted and I do have twrp installed but am failing when trying to flash a rom. I'm willing to pay somebody to help me if they are willing to walk me through fixing it. Any help or direction is appreciated. I have been reading different threads but honestly I'm just getting more confused.

Thanks in advance.