IPhone stuck on apple logo

Force restart iPhone - Apple Support ⬅︎ try this...

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1. Press and quickly release the volume up button.
2. Press and quickly release the volume down button.
3. Press and hold the side button.
4. When the Apple logo appears, release the button.

If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support

For further help from Apple Click "Contact Support" top right corner of this page...follow the leads until you get the telephone or chat options.

They are very busy now so you might have to try a few times...