How can I view webpages in "text-only" mode while also using JavaScript?

In an effort to reduce my data consumption, I want to view webpages, specifically webpages with logins and forms, in text-only mode. These pages usually require JavaScript, it seems. I want very basic text-only mode. The browser "low-data/no images" options don't quite cut it for my goal of stretching 500MB over a month with frequent use. Right now, I am using a mix of DuckDuckGo Lite, Textise, and Lynx in Termux for Android to bring my data consumption down to a minimum, but this doesn't work with websites that require JavaScript. Does anyone know how I can accomplish having JavaScript enabled while still using very little bandwidth?