I've achieved a revenue of $1,000 with an iOS app, but now I'm struggling with PMF

Three months ago, I launched an iOS app - Kikocard, that started as a project to address my own need to make social media posts easier and quicker with aesthetic layout. I was thrilled when the app quickly began generating revenue, hitting the $1,000 mark. This early success was both exciting and promising. However, as I began to consider scaling up, I encountered a significant challenge. I found it difficult to identify a specific demand or market segment that resonates with my app. This has left me at a loss when it comes to marketing strategies, as I'm unsure where to find my target audience. My app offers unique and niche functionality, setting it apart from larger graphic design tools in the market. Yet, this unique and niche appeal has made it challenging to find the right audience for promotion. The question now is whether I should continue to iterate and refine this product or pivot to create an application that aligns more closely with a product-market fit scenario. I'm at a crossroads and seeking advice from experienced entrepreneurs and marketers. Should I invest more time and resources into optimizing my current app, or is it time to reassess and develop a new product that has a clearer market demand?