Why does the upper thread keep breaking?

Loops appear on the surface of the fabric when embroidering.

There are needle cuts or holes in the garment.

The thread tension is incorrect.

Stitches are skipped.

Embroidery pattern does not sew out correctly.

The needle threader cannot be used.

Nothing happens, even if the LCD display is pressed.

Although the thread is not broken, a broken thread error occurs and the machine stops.

The upper thread does not reach the bobbin thread when embroidering begins.

The machine is noisy while embroidering.

Why does the needle keep breaking?

 When thread got tangled