> "getting stuck or even better"
This ain't stop with one. To me, it's just I already lost interest in the current one because my sense felt (or I realized) this is not as worth as what I thought when started. It's okay to move on rather than being stubborn. Since 2017, as a solo developer, I launched 5 projects. Now, most of the time, I'm working on only 2 projects (90-10 split) along side my full time, not a developer.
Also, I was never stuck at an idea phase, I do extensive Google search to validate the idea and readily jump on buying a domain as a commitment to turn idea into the product, with a landing page deployed with in 2 days.