OS Problems

After bricking my OS on my moto e completely I decided to flash a custom Official Lolipop ROM, it worked and my phone was working fine for a week or two but then the OS got bricked again and I flashed the same ROM again but this time the WiFi and the Bluetooth were not working and also my phone was not detecting any of my SIM cards. I then decided to switch back to Official Stock KITKAT ROM but the above mentioned three problems still exist.
I've tried unofficial ROMS like Cyanogen Mod, PAC MAN and Carbon ROM and I get stuck at Bootloader Unlocked Screen. A little help will be appreciated.