The traffic that you’re getting is organically via Google Business Listing I suppose but that’s not enough.

Yes you would benefit from Google Ads more than Facebook but it doesn’t work that way. You have to take benefit of the whole system.

First time visitor may not convert into a sale. With Facebook/ Instagram ads, you can retarget that same visitor who visited your website via google ads/ or Via Google Maps.

Also since this is more like a recurring business, you can target your previous customers too again and again to possibly push them into a recurring client if they’ve got work done by you in the past.

I hope it makes sense.

DM me if you have any other query.

I would suggest targeting people via Facebook and google ads for instant results. SEO will take you months to rank if done properly.

Create good ad campaigns and try to get recurring clients.