It is absolutely normal that 90% of your messages never get an answer. This is because most accounts are inactive AND many people aren't currently looking for a language partner. The other potential reason is that you just send generic messages like "Hi". So my suggestions are: 1) Use the website (not the app) to see when a user has last logged in. Most accounts have been inactive for 6 months or longer. Make sure you only contact people who have logged in recently. Also make sure you only write to people who have a personal description/short introduction in their profile. People who don't have one most likely never looked for language partners and never will. 2) Write a personalised message. Read the profile of the person you are contacting and tell them a bit about you and why you want to learn the language, what your level (only a few words? Can you have real conversations)? is and what aspects you want to practice (writing, speaking, etc.).