Despite low sales of the iPhone 12 Mini, sources have told noted tipster Jon Prosser that Apple will launch an iPhone 13 Mini. According to these sources, the main reason the iPhone 12 Mini floundered was the success of the iPhone SE (2020). Since no iPhone SE will launch in 2021, the iPhone 13 Mini will do markedly better.
https://www.notebookcheck.net/Apple-iPhone-13-Mini-still-on-the-table-despite-lagging-sales-of-iPhone-12-Mini.520744.0.html