My screen is broken

There don't seem to be any written, iFixit-style guides available for your phone, but I did find a good YouTube video showing all the correct steps for replacing the screen on your phone.

OnePlus Nord CE 2 Lite 5G LCD Replacement Full Video 4K #OnePlusRepair #LCDReplacement #MobileRepair - YouTube

The one suggestion I have is that you might use a hair dryer to heat the back and screen before you start removing them; the heat will help soften the adhesive and make it easier to take off.

As you work, take lots of pictures and once you're done you can use them to create your own iFixit guide to that repair. It's easy, fun, and will earn the appreciation of the repair community and especially those who come after you with the same problem.

Create a new Guide - iFixit