After a lot of research and bumping my head, I decided to try out a bluetooth dongle, and manage to get it working. here's what I did:
I bought an Orico 5.0 bluetooth dongle.
list usb devices using lsusb command. In my case I found this:
Bus 003 Device 006: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
download xmpow bluetooth BH519A dongle ...
You can try adding the following line to the last line of the file /etc/modprobe.d/alsa-base.conf:
options snd-hda-intel model=laptop-amic enable=yes