There are many things that could cause the problems you are experiencing.
Slicer and 3DPrinter setting conflicting, Hot-end temperature incorrect for filament, printing too fast, 3DPrinter not properly maintained and lubricated.

It could help it you supplied more information, Slicer settings, 3D Printer temperatures, Print Speed, type of Filament used.
Supping a link to a video uploaded to a share site like google Drive or You-tube can come in handy.