Quote Originally Posted by xayoz View Post
As has been stated, many things could cause this. Start by releveling your bed, the enclosure idea is a good one, any draft can cause issues. My Ender 3 Pro is in one of these https://www.creality3dofficial.com/p...y-installation / JustCarding
Even if your bed is perfectly level, the nozzle might be too close to the print bed. If this occurs, the nozzle will drag across the bed and will be unable to extrude filament.