Saddle fitting can be frustrating! I recently bought my first English saddle as well.
Because I live far from the nearest professional saddle fitting experts, I did lots of research online concerning saddle fitting and which brands tend to fit a certain horse’s build. Stubben has lots of great info on their site. I ended up buying an older Stubben Parzival close-contact jumping saddle on eBay for $300 that fits my high withered Paint gelding well. Just make sure if you decide on an older saddle that the billets are in good shape or in the case of my saddle, have been recently replaced. Best of luck! 😊