So, I'm on a very tight budget and shopping for a bike... Because of this budget, I am hoping I will be able to broaden my options for what I can buy (I'm primarily shopping used)

Anyways, I am about 5'11" or so... My inseam is about 34", and I have ridden bikes that were 56cm and it was decent. However, I'm wondering how small and how large I can end up going on a frame and still have it work decently for me.

I was searching online and saw someone with similar size riding a 52cm frame, and others riding as large as 60cm frames.

So, my question is, could I get away with going that small on a frame and still have a decent ride? Or should I really limit myself to like, 54-58cm to stay as close to 56cm as possible? I know experience on different frame sizes would be my best bet, but, I don't have access to riding bikes of all different sizes...

So, what frame sizes do yall think I can get away with since I am on a budget?

-thanks