How long you been riding it and how often? Sometimes comfort on a saddle just depends on your pelvic bones and joints getting used to it. Takes me several weeks if I lay off cycling for a while. So if saddle comfort is your main issue, then maybe give it more time unless you are getting sores and blisters.
My wife actually has a similar looking stationary bike. She's 5'-2" , I'm 5'-11". I'll get on it sometimes and can stay on it for about an hour at low resistance without having to adjust it for me. The saddle isn't an easy change as it's not a standard mount system for a real bike. Other than that, just change stuff up till you find what works. You can rotate the bars to any position you care. Horizontal towards you or vertical and away from you.