If it is by forging that you become a blacksmith, it is by regularly posting content on Facebook that you will gain visibility (and increase it!).
It is important that the content you post on Facebook is engaging, i.e. it challenges your contacts (don't hesitate to ask them questions) and urges them to react (whether by "liking" your posts, sharing them with their by writing comments, answering your questions, clicking on a link to your professional website, etc.).
To prevent monotony from set in and your customers getting tired of your Facebook posts, try to vary your content, both in substance:
Don't forbid yourself a bit of humor (provided, however, that it is appropriate!). Your Facebook page should also help humanize your business.
Just because Nature hates emptiness doesn't mean you have to feel compelled to fill your Facebook pages with endless texts… Get to the bottom of it. On the Internet, 80% of a text is browsed diagonally. And very few Internet users read a post to the end.
If there's one industry you know at your fingertips, it's yours. Let your community benefit from your professional expertise: give them expert advice, submit your analysis… Your credibility and reputation will be greatly enhanced