grand prime, help me not be stupid

i just got a grand prime sm-g531h and I rooted it and well....it just says Samsung and that's it...it will go in recovery mode and it will go into download mode so I think its not to far gone....but my recovery mode is teamwin....I go to reboot menu and it says no os installed...I just wanna go back to normal..its a unlocked phone...idk what region it is so I'm not sure what rom to download cause all the roms have different regions...maybe someone can help me fix my mistake...the ssn is g531hdsgsmh and the imei is MOD EDIT ON esn if you need either of those...just help me what do I do???

Help needed.. Stupid phone calls and Bluetooth

I'm so close throwing this phone on the f*cking floor ����

This phone's microphone and Bluetooth are simply broken!!
Using the Bluetooth is like a lottery ticket, you have a chance at getting it but 90% of the time it won't work.

And whenever I talk during phone calls people don't even hear me and I need to repeat myself 5 times....

Why the hell do Huawei or Google not fix it??? It's known since the beginning and no one cares..
Now I don't want to root my phone in order not to lose warranty and the Bluetooth can't even be fixed..

What to do?!