Hi @shinchan76526
Here's a [https://www.youtube.com/watch?v=A1Byt4ehiAY|video] that shows how to remove/replace the display in the phone.
To verify that you're getting the correct replacement part, check the phone model number on the back of the phone e.g. SM-A600F??? and then search online for ''(insert full model number) LCD display module'' to find suppliers that suit you best.