the way to check your needle orientation is as follows.
Look at the needle, there is one side with a long groove, and one side with a short groove (or scarf)
Look at the machine, where the needle enters the machine. look for where the shuttle/bobbin is in relation to the needle (to the right or the left or behind (only on Transverse machines))
The side with the long groove goes AWAY from the the side with the shuttle/bobbin.
I.E. If your machine has the shuttle and bobbin to the left of the needle, then the long groove goes to the right.
The reason for this is that when the needle goes through the fabric the side without the long groove causes the thread to get caught between the needle and the fabric, as the needle is lifted forming a loop that the shuttle passes the lower thread through, making a stitch. That is why the long groove need to be opposite the shuttle.