What actually worked for growing your LinkedIn company page?

I run the LinkedIn page for a small company and I'm honestly stuck. Around three months in, posting a few times a week, and the numbers barely move. Same handful of impressions every time, mostly people who already follow us.

I've tried a fair bit - short text posts, images, longer posts with a hook at the top, posting at different times of day. Nothing made a difference I could point at and say ok, that was the thing.

People keep saying that's the whole game and that company pages just don't get shown to anyone anymore. Is that actually true, or is it one of those things everyone repeats?

Anyone here grown a page from basically nothing? What was the thing that finally worked for you?