my phone is glitching out suddenly, I cannot slide up or down so I am not able to shutdown my phone or open a different application

Hey there, nj_2022.

It sounds like your iPhone is unresponsive, so from here you can see if force restarting your iPhone helps. The information below on how to force restart is from this article: If your iPhone, iPad, or iPod touch won't turn on or is frozen

"If your screen is black or frozen

If your screen is black or frozen, you might need to force restart your device. A force restart won't erase the content on your device. You can force restart your device even if the screen is black or the buttons aren't responding. Follow these steps:

• iPad models that don't have a Home button: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then press and hold the Power button until the device restarts.
• iPhone 8 or later: Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then press and hold the Side button until you see the Apple logo.
• iPhone 7, iPhone 7 Plus, and iPod touch (7th generation): Press and hold both the Top (or Side) button and the Volume Down buttons until you see the Apple logo.
• iPad with Home button, iPhone 6s or earlier, and iPod touch (6th generation) or earlier: Press and hold both the Home and the Top (or Side) buttons until you see the Apple logo."

We hope that helps. Take care.