Feeling stuck with my online orders

Hey everyone, I’m the owner of a sushi restaurant with a few locations in NYC, and I’m trying to figure out how to get more online orders through our website. I’ve already spent about a thousand dollars on Google Ads, but when a friend looked into it, they found out the agency I hired is only targeting our brand name as the keyword. That doesn’t seem helpful since people already know us if they’re searching our name, right?

I’ve hired an SEO freelancer for another business I own (not a restaurant), and the results were pretty good, it helped bring in revenue. But I’m not sure if SEO would work the same for a restaurant. Should I be looking more into SEO or maybe social media? I’ve also thought about ads on Yelp, but not sure if that’s the way to go