What sort of business are you running?
Also, are you referring to your business page or your personal profile?
Facebook’s organic reach is weird, especially for business pages. Sure, boosting a post internally to your followers is usually a worthy investment, it’s cheaper than selling to a cold audience.
There are different marketing strategies that work on Facebook. Some rely on video and retarget after watching for 10 seconds or so.
Or writing a ton of content (and distributing across Facebook).
Or building communities with engaging questions on their way to personal or corporate branding.
There’s no easy answer here. Researching your competitors would give you a rough idea of what works for them. You can play the safe bet by replicating or experimenting along the established strategy.