Candle Making

Advice from an SEO and ads guy here. Maximize your GMB potential first, make sure you got descriptions, services, and fill out every possible question they have. Make sure to use the business updates feature and post regularly pictures and updates.

Get as much reviews as possible.

Then you can run local SEO campaign, I typically charge $250 /m but you can do it yourself if you have time using Yext.

Next have a look at running a Google PMax campaign and focus delivery on maps.

Then you can start focusing on GAds for search, fb ads and remarketing with a short 2-5 days retention.

Then you can look into SEO for your website.

Also look at other niches like truck washing and engine washing.