I got a 195 on my PSAT, which should translate to a 1950 on the SAT. When I took the SAT for the first time, I got an 1820. I studied a lot for 2 months and retook it, then I got a 2200.
Don't get down on yourself, you haven't even taken the actual SAT yet! The PSAT can be a good indicator for some people, but use it as a baseline- now you know how much to study. Good luck