My hotspot is not showing anymore

Hotspot is carrier specific feature --> Contact your Carrier (Cellular Service Provider) The agency who issued the SIM to you

Click --> If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi

See the Pic below the Hotspot is made available based on the Mobile Data selected and the feature that is enabled by the Carrier

Make sure the Mobile Hotspot or Mobile Smartphone Hotspot feature is turned on. Make sure the connecting device's Wi-Fi is turned on. Update to the latest firmware version for all devices. Restart the hotspot device or phone.