iPhone 8 Plus stays on the Apple logo after trying to reset it

See if you have time to check some of the solutions presented in this link to solve your issue If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support

If none of the above does not work then a visit to the Apple Store is warranted.

Axel F.

Make a genius bar appointment with Apple for an evaluation.

They have diagnostic tools and can tell you what options you have.