Apple

hello! so basically i bought this iphone 13 a few weeks ago and everything was normal till like yesterday. face id stopped working and I've tried everything, but it still won't work. Sometimes when i boot it up it will work for a few seconds, like it will let me go through the configuration, but as i finish it, it will start to lag and a message saying face id not available will appear. I'm not willing to factory reset it or let it go through repair, since i have little to no money for this. Any help?