Hi! i will explain how to get an elytra
1-First you have to kill dragon in end when you killed him there will be a portal you have to throw a pearl and you will teleport somewhere
2-After you have to search for islands some islands have castles you can get tools from there but we don’ t search that.
3-If you find an SHİP in islands it ‘s mean you find an ELYTRA .
4-After find the ship just go to the ship -probably ship in the air- and go to the cabins you will find elytra on a item frame
enjoy your flight 🙂