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I have a Creality Ender 3 V3 KE, so not exactly your model but they should be pretty similar. Great printer in my experience.
My suggestions:
  • Try to print slower, if you get better success rate you might need to do something to fix vibrations.
  • Try to increase the bed temperature
  • Use a good slicer that supports the printer officially (i use Orca Slicer nb. get it from github, there are some fake websites out there)
  • Some filament will leave some residue on the bed that causes other prints to not stick properly, wash the bed with water and a microfiber cloth
  • Replace the nozzle, make sure there are no clogs
  • Try to print this and this
I've found also that some filaments on amazon are just bad, i had good experience with anycubic and creality PLA and PETG.
On the contrary I had a lot of issues printing somewhat complex models with esun PLA at high speed.
Not saying it is totally worthless, since it comes in some very pretty colors, and i managed to use it for lots of projects.
It is just hard to use and needs some tweaking, better supports, cleaner bed, sometimes glue. Just stick to other brands if you want to make your life easier.
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