Speaker is not working

Definitely understand. I actually had an issue like this once and the problem was relegated to my earphone jack. Which phone is this?

you can check when you unplug your headphones, does the music stop playing? The volume should change on the device as well.

It sounds like your speaker has been damaged. Have you check it while trying to play music vs phone call?

Have you checked the volume level is not set to 0% for other apps than your ringtones?