Almost impossible to catch!

So, I was trying to catch a moltress and a lugia and guess what? Thanks to the stupid idea of having very limited premiere balls and the golden razz berries being horrible at helping you catch the legendaries, the Pokémon got away. Fix this, Niantic because these features are absolute trash!! How can you catch them all when the game pretty much prevents you from catching the only ones worth getting?

TheRezurected about Pokémon GO, v1.39.1