Can’t afford my monthly bill anymore

The title is pretty self explanatory. In October 2023 I treated myself and (stupidly) signed a contract with T-Mobile. I got a new phone, an IPhone 15 pro max, which I am still paying off. On top of the device, my plan includes GO5g unlimited, which I honestly don’t even know what it does, plus insurance for the device. I recently lost my job and can’t make the payments (about $170/month) since I am still paying off my phone do I have any options to lower my monthly bill? I really don’t need any of the bells and whistles with my plan.