The challenge in having an online business is marketing. Since you have no physical store, you have to make extra effort in promoting your business. You'll need connection and social media presence to spread your business. With poor marketing, your online business will not succeed in the long run.
Understand this situation especially that you have lots of competitors online.
But here you can do this thing.
Create daily content with your product and make sure that your videos is entertaining.
Do live selling in Meta,Shopee and Tiktok since this platforms are huge then provably you can get lots of buyers especially if you are consistent doing this on daily basis.
Hire affiliates to promote your product and this is famous earning options done by this people so start introducing them your products especially to those influencers that had huge followers.
Consistency is important and success will not be gotten in one day or instantly if many people know then like the quality of your product there's good chance that sales would follow.