If it is a cheap enough lathe that it is light (lighter?) weight, try moving it up and down on 4x4s, cinder blocks, whatever you have on hand.
Elbow height is too low for me, and my neck hurts after too much time of being bent over the spindle for smaller stuff. I found that about
4" or so above the height of my elbow seems to be about right as it makes the spindle work easier when holding the tools at a more acute angle.
I found that raising my lathe higher than elbow height also reduced fatigue quite a bit.
Try your lathe out with something small on it at a lower speed so you can raise up the lathe a bit at a time and try out the different positions. As you have probably found out by now, one size does not fit all in turning, and everyone does things differently in woodturning. It may look the same, but it usually isn't.
Robert