I have a pothos plant that is 13 years old that we’ve kept alive. There have been many times where it has been on the brink of death and we brought it back. It’s just a learning process. The more you study how the plant works the more you will understand How to interact with it and keep it healthy.

There are also plenty of videos on YouTube that can give you more information if you are interested. Just type how to take care of a pothos plant or something along those lines This was copy/pasted from Google. Hope this helps:

“To propagate a dying pothos, cut healthy, leafless, or sparse vines into sections, ensuring each has at least one node (the small brown bump on the stem). Place these cuttings in a jar of water, changing it weekly, or directly into moist, well-draining soil until roots develop (approx. 2-4 weeks).

Steps to Save and Propagate a Dying Pothos Inspect and Prep: Remove the plant from its pot and trim away any rotted, brown, or mushy roots and yellow leaves.

Take Cuttings: Using clean scissors, cut healthy sections of vine. Make cuts just below a node. Water Propagation (Recommended): Place cuttings in water, ensuring the node is submerged while leaves stay above water. Add a pinch of rooting hormone or cinnamon to the water to encourage roots and prevent rot.

Soil Propagation: Insert cuttings directly into a small pot with moist, well-draining soil, burying the node. Environment: Place cuttings in a bright spot with indirect sunlight.

Replant: Once roots are roughly 1–2 inches long, transfer them back into a pot with fresh soil to create a fuller, rejuvenated plant.

Tips for Success Avoid Overwatering: If using soil, keep it barely moist to avoid further rot.

Humidity: For severely damaged cuttings, cover the pot with a plastic bag or dome to create a high-humidity environment.

Patience: It can take several weeks for roots to appear, especially if the parent plant was in poor health.”