It would be helpful if we had more information about why you're trying to bypass the lock. If you forgot the pattern and you just want to be able to use the device, you can try resetting the device to factory default settings. If you need data off of the device and you don't know the pattern to unlock it, I don't think anyone on this forum will be able to help you.

Deleting unused apps may help, but I would start by disabling background usage for apps or restarting the phone. You can also check for any software updates that may be available for the phone and see if that resolves the issue.

This may be a hardware problem, but to find out which specific part is at fault will require some troubleshooting. iFixit has an article that may help you: ASUS Q400A-BHI7N03 Troubleshooting

If the printed pages have vertical lines going down the page, you may want to try cleaning the printer's internal parts. Sometimes the printer can collect debris and should be regularly cleaned to avoid issues. The user manual for the printer has additional information on page 35: https://gdlp01.c-wss.com/gds/8/0300021558/01/SELPHY_CP720...

Safe mode disables all third party apps; you may have enabled it on accident. You can try restarting the phone to exit Safe Mode. Samsung has more information available here: https://www.samsung.com/au/support/mobil...-devices/exit-out-of-safe-mode-or-android-recovery/

If it's a motherboard failure, then the issue is unrelated to your Apple account and I don't see a reason why the technician would need your Apple ID password. I can't find any official Apple source saying this is necessary, even for official Apple technicians. In the future, it would be a good idea to do a backup of the device and then reset the device to factory default settings before sending it in for repair. More info is available here: https://support.apple.com/en-us/116942

Your phone likely has physical damage to the screen and needs repaired. I don't know which page on the Motorola website gave you the error code or what the error code was, but just in case, here's Motorola's repair FAQ: https://en-us.support.motorola.com/app/repair-faqs/category/need-service-repair If that page doesn't work, iFixit has some documents about repair for this device: Motorola Razr 40

If you're experiencing performance issues, it's a good idea to try disabling software running in the background while you're playing the game to see if it resolves the issue. You should make sure that the game has enough available system resources that isn't being used by other software. You can also try restarting the phone, freeing up storage space on the phone, or checking for software updates.

There are multiple potential causes depending on the specific details of your issue. You can try updating your phone's operating system just in case it's a software issue. If that doesn't resolve the problem, make sure your phone isn't overheating. If it seems like your phone is turning off because the battery drains unusually quickly, you can try turning off software that's running in the background or disabling unused services such as GPS or Bluetooth. If the quick battery drain continues, your phone's battery may have degraded over time and may need a replacement.

It might be a good idea to ask the person you bought it from about this issue. If you cannot contact the person you bought it from, you can try resetting the iPad to factory default settings. This article may be helpful: https://support.apple.com/en-us/108931