First layer adhesion is the most critical phase of the print.

Watch the first layer to be sure that it has a smooth appearance and is sticking to the bed well. The layer should appear slightly smooshed to the bed, but not so much that they have gaps (too low) or appear rounded or don't stick to the bed. (too high)

You can tune the Z-height of the first layer to dial things in. Press the knob on the control panel to enter the menu and select "Live adjust Z"

Turn the knob clockwise to raise the head.

Turn the knob counter-clockwise to lower the head.

When you have finished adjusting the Z-height, press the knob to return to the menu.

Small adjustments should be all that's needed to make a great first layer. If you need to adjust the Z-height by more than about 0.05mm, stop the print and post on the talk site. The machine may need recalibration.