I am printing with a Creality Ender 3 V3 KE.
I encountered an issue where the model would not adhere to the build plate. The filament is PLA.
I dealt with the issue in the following order:
1. Make the X-axis parallel to the Z-axis
2. Adjust the Z-axis. It is within approximately 0.20 mm.
3. Adjust the filament and build plate.
I set the build plate temperature to 210 degrees and 70 degrees, respectively, which are higher.
4. Set the brim.
5. Slow down the Initial Printing Speed. I set it to 1/4 of the initial value.
6. Increase the height and width of the Initial Layer.
With these adjustments, I am now able to print without any problems.