You can try Google My Business to generate more revenue. You can also try to monetize your website by placing ads on your site.
If you are earning less than $100 a month from AdSense, you can consider using Google's Product Listing Ads. If that doesn't help, then you need to find new keywords and write better content that will get more traffic and increase your earnings.
There are other ways to earn more along with your AdSense, like doing sponsored posts or reviews or posting about something related to your niche or topic of interest.