Hi, pls try in fellow way:
1. After starting the system, quickly press the up and down cursor keys to prevent skipping, then press e to enter the editing state:

2. Find the line at the beginning of linux:

Add rw 1 two items here:


3. After the editing is completed, press ctrl+x to start the system. At this time, the following prompt appears. Enter the root password to log in to the system.

4. Verify that the current single-user mode is available for subsequent operations.

thanks.