Iphone not working after update

I just updated my iphone 15 promax. it's on but the touchscreen doesn't work, i can unlock it or use any features, only the buttons seem to work.

I've tried to force restart it - no luck.

I've tried plugging it in - my macbook doesn't find it and it doesn't start charging. Tried plugging into power socket and not charging then either.

Any ideas on how to fix? it's a rather expensive gadget if it doesn't work!