I've used Facebook Ads for some time, and I haven't been impressed with it.
As a UK business, I target the UK only, but I seem to get visitors from people in obscure places in Africa etc. which is a total waste of time and money.
Facebooks Ads isn't particularly great for advertising a business, these days. It's been taken over by the likes of TikTok, which are delivering a much better, and more reliable service.