dasha_597 Said:
"Screen locks while using Apple Maps : While driving my phone starts to dim and then goes black screen while using Apple Maps and i can’t see the directions until I tap the screen again. I don’t remember having to do this before in the past."
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Install the Latest-Compatible Update:
I see you have iOS14 installed. So, try installing an update, seeing if any bugs make this go away...
Update Using a Computer:
Have a Computer Handy? If so, try using a computer to update. Go here: Update your iPhone Using a Computer - User Tip. If any updates are availabe, they will install, sure enough.