There are four ways to make more money in a business

Get more customers. If you just started your business, focus on finding new customers by advertising, creating a website, and reaching out to potential customers. You could also offer discounts or free samples to encourage people to try your products or services.
Encourage customers to buy more. You can suggest other products or services to customers when they are making a purchase. This can help increase the amount of money they spend at your business.
Encourage customers to buy more often. Create incentives for customers to come back to your business regularly, such as loyalty programs or reminders to come back for regular maintenance or service.
Keep your existing customers happy. It’s important to show your current customers how much you appreciate their business. This can include offering discounts or rewards, hosting special events, or simply thanking them for their business. It’s usually easier and cheaper to keep your current customers happy than it is to find new ones.