Quoted from seenev:I just got an ender 3 v2. First 3d printer I've had since the thing-o-matic. My first few prints were great but then they kept failing every time. I finally sprayed my wife's old hair spray on the bed and it worked perfectly.
I have an Ender 3 v2 and had lots of problems with the heated bed. Anything I would print would either fail, or stick like crazy to the composite material. Prints stuck so much I damaged the material trying to remove them.
I flipped the bed over and used the smooth uncoated glass side instead. Works perfectly now and prints remove easily.