That is a bummer!
Perhaps one of these could help?
Transitioning from Trinket to Pickcode | Pickcode Help
Trinket will be shutting down in 2026. We’re working with their team to support computer science teachers looking for an alternate platform.
(help.pickcode.io)
Google Colab (Totally get it if if you'd like to avoid Google)
Notebooks Documentation
Explore and run machine learning code with Kaggle Notebooks, a cloud computational environment that enables reproducible and collaborative analysis
(www.kaggle.com)