HELP ME PLEASE!!

I have an LG Optimus L90 D415. When i bought, came with kitkat and later updated to lollipop. First i rooted the phone. I made a backup of my recovery using flashify first, then i downloaded twrp successfully. I then gathered all my materials to flash a custom rom (the rom itself and google apps). I booted into my new custom recovery and made a backup of my current stock rom (both rom and recovery backed up on sd). I flashed cm11 to my phone and it worked, but there were MANY problems. The mobile antenae would turn off and on constantly and the camera app didnt even open, but wifi was fine. I got a notification on the phone saying that there was a cm11 update to nightly. I downloaded it, thinking it would solve the problems. Then, my phone rebooted into recovery to update. After it was done, booted normally into cm11. But then, it reset my phone and there were even more problems. i was back at the setup screen, wifi OR mobile data didnt work, there was no bluetooth, camera was not opening once again and the mobile antenae would turn off and on constantly like before. I rebooted my phone normally, and after it booted it was reset AGAIN. I was unable to go into recovery by holding vol down and power, it would go to the LG screen and reboot. Then guess what? RESET AGAIN! I was getting a little frustrated, so i tried to reboot recovery from terminal emulator. i went into storage, and it said internal storage was 128 mb, with 9mbs remaining. So i plugged my fone into the PC and installed drivers and ADB fast boot. I went into cmd and made it boot into recovery once again successfully. from recovery, i wiped my phone from cm and went to restore. My phone however, stopped at about half way and said RESTORE FAILED. At this point, i knew the phone was as good as garbage. but as a last resort, i plugged it in to the PC once again and went into download mode by holding volume up while plugging in the phone to the PC. i opened lg flash tool 2014. i wanted to see if i can flash the stock .kdz file i had of my phone. I pressed on read phone info and it gave me errors. it said IMEI Empty and other things like that. SO IS MY PHONE AS GOOD AS DEAD OR WHAT? SOMEONE PLEEEASSSE HELP!!!!!!!!!!!!!