Not sure if you know this but most Creality Ender 3’s ship with the silver springs which are not very good for adjusting.
I recommend picking up the yellow bed springs first as an inexpensive option to leveling your bed.
Official Creality Pressure Heatbed Spring (Qty 4)
Adding a BLTouch would be the second option solution to longer-term stable leveling:
Official Creality BLTouch Auto-Bed Leveling Sensor Kit