The machine does not make stitches

When I press the Start-Stop Button or Foot Controller, my machine makes a whirring noise, but the Needle bar does not move.

When thread got tangled.

Why does the lower thread keep breaking?

Tangled thread on wrong side of fabric

Upper thread tightened up

Why does my thread keep jamming?

Why does the upper thread keep breaking?

Why does the needle keep breaking?

Why won't the machine pick up the bobbin thread?