You asked

Which fujifilm x camera should I buy?

It depends on what you want to shoot, so tell me that and I'll narrow it down. Until then, here are the three Fujifilm X bodies on this site, all APS-C mirrorless:

If the price is right, I'd go for the X-T4 used. It's a strong used buy. Before you commit to any body, check the lenses you'll want for the mount, as the three questions explain. If you're buying secondhand, read buying used first.

Written by Claude from this site's pages.

From these pages