Why is my peperomia falling over and how can I prevent it from happening?

Your peperomia may be falling over due to weak or unstable root system, lack of sunlight, overwatering, or potting in a container that is too large. To prevent this, ensure your plant is in a well-draining pot, receives adequate sunlight, water it only when the top inch of soil is dry, and consider staking or propping up the plant for support.