please help me restore photos and videos from Iphone 12 mini

If you are seeing the Apple logo stuck on the screen, then the only way to get the device working again is to restore it, which will wipe all data. This is why it is so important to have regular backups and iCloud gives you the ability to create an unattended backup on a daily basis with wi-fi and plugging the device in after the initial configuration. See this about trying to get your device into Recovery Mode to be able to restore it. If you can't update or restore your iPhone or iPod touch - Apple Support Again, without a backup you will lose your data, and since it is locked with the Apple logo, there is no way for you to back it up now.

Check this link...

If your iPhone is stuck on the Apple logo - Apple Support

If the phone won't work you will lose all data without a back-up. You are learning the hard way the importance of a good back-up plan.

Help restore information from the phone? It's already gone. You'll need to reset and restore your device. That's the only option. Consider it a lesson in backing up your data multiple ways in the future.

It doesn't matter if it is a breakdown of the iPhone or the iOS. The fact is that the iOS is frozen and the only way to get past that is to restore the device, which means data will be lost. I'm sorry, but as you have been told more that once, your lack of a backup plan has put you in a position to loose data. It is difficult to learn the hard way, but you have put yourself into this position.

If your still able to access the phone and are trying to move something to another, try backing up your Iphone 12 mini to icloud or you can use bluetooth to transfer data over from one to another.