Wish I could help.

I purchased my printers both on E-Bay used, the first one showed up without assembly instructions.
As they were used I expected some missing parts, so before purchasing these used 3D Printers I searched the Internet.
My search found many YouTube videos of my future purchases. they included every aspect of these 3D Printers including assembly videos.
My suggestion is to search You tube and find all that applies to your 3D Printer and the problems you are having a watch.

To get future help you could post specific information such as slicer settings along with Photos showing how Prints look.
This would make it much easier to help you diagnose your printer and allow us to post suggestions that could help you.

Also your one paragraph sentence photo-less post only make a diagnosis much more difficult.