Sounds like you need a PUK code? Thus is available from your network carrier. Resetting the phone isn't going to fix your issue!
It is locked by the phones IMEI No (every handset has its own IMEI, even an apple watch for example.
Use the below method with caution because it wipe all of your data
1. Turn Off Your Device. if the device is freezing Remove Battery and insert few second.
2. Press and hold Left key + Right Key Together Press Power Buttonuntil vibrates.
3. Now select "factory reset (full wipe)"
4. then select "Yes"
wait for few seconds
5. after finish Hard Reset Select Reboot System Now
Your Device will be auto restart
Check the battery to see if the sides are bulging in the middle. Do a spin test. Take the battery and put it on a flat surface, then spin it like a top. If it spins at all, the sides are not flat and the contacts are moving away from the contacts in the phone.
there are phone repair shops all over the place that can replace the glass quickly
the glass is fairly expensive but there are different qualities that increase the life of the glass on dropping
ask around , get quotes and consider having a person with experience do the job as it takes very little to break the phone full stop