Since Termux won't work, try these legacy-friendly terminal emulators:
To get Termux running on an Android 4 device, you must source a designed for that specific API level. termux android 4
Since Termux is out of the question, users with older hardware often turn to these legacy tools: Since Termux won't work, try these legacy-friendly terminal
Termux will attempt to bootstrap the base system (about 200MB). This is where most failures happen. Since Termux won't work