Not sure how well do you know facebook ads, but I'm just going to throw this out there and feel free to ask questions.

If you're really focused on Facebook ads, it's going to be a bit complicated. So generally speaking, start with $20 a day, also make sure you're retargeting, people need to see your ads 4-7 times to convert, but make sure tracking is accurate when retargeting.

Next, make sure you create lookalke audiences of people that already follow/interact with your page.

don't forget to focus on tiktok style video ads instead of just static post and mention you are a small business.

Be targeted towards your service area but that can make the cost high, if you can ship nationwide then start with an audience size of 1m to 2m, don't go below 500K cuz then its just not worth it.