The "better" in our keyword implies customization. Download the repository, change the variables, and see how the code interacts with the page. This teaches JavaScript or Python, which is a better long-term skill than beating Level 14 faster.
If the goal is technical improvement for a private, educational reverse-engineering project:
If you want to make Lexia better via GitHub, follow these steps. Do not download .exe files. Stick to open-source userscripts. lexia hacks github better
Step 1: Install a Userscript Manager
Step 2: Find a Raw Script on GitHub
Step 3: Install & Configure
Step 4: Tweak for "Better" Performance
While repositories change names frequently (due to DMCA takedowns), here are the archetypes you will find when searching "lexia hacks github better" .