After all the feedback I found my mojo again and have now made a ton of improvements.
I've added Normal and Hard difficulty modes with separate progression tracking, implemented an achievement system featuring 25 unlockable achievements, and created a tutorial level to help new players learn the mechanics. The UI has been significantly improved with better text sizes and enhanced readability throughout. Various bug fixes have been addressed, and overall playability has been refined to create a smoother, more polished experience.