Install Scratch 2 back on the latest Raspberry Pi OS. Scratch 2 was removed after Adobe Flash was discontinued. Fortunately, this repository makes it easy to install back.
However, as this is an offline application, it is still safe and legal to use it.
Or, to install manually:
git clone https://github.com/Botspot/scratch2
sudo apt install -yf ~/scratch2/scratch2_0.25_armhf.deb
rm -rf ~/scratch2
Scratch 2 package was originally acquired from the official archive page. A few files have been rearranged to make it more portable and less likely to cause any overwrite conflicts.