Bug after iOS update 15.5

After updating to iOS 15.5, the phone no longer makes a sound. I have tried to

muted and unmute

restart phone

reset all settings

turn on and off do not disturb

turn off Bluetooth

hard Reset

no earphone plugged

phone does not display earphone to be plugged

assisitve touch cannot turn up the volume

buttons cannot turn up the volume (enabled in setting)

can be adjusted in sounds and hepatica but still don’t make a sound

control centre can adjust light but not sound (stuck)

i have tried in all apps, chrome, music, WhatsApp, instagram, safari, alarm etc.

all gives no sound

siri is not working

please help

iphone Se 2

also keyboard (word suggestions) are bugging, it keeps saying that the two separated words is one word, but they aren’t in display

i just updated to iOS 15.5 by accident, since someone borrowed my phone and clicked the auto update today

i really need the alarm to work

also the auto capitalising is not working too