Fix raids

Very annoying but cool raids: every time I get into a raid the boss is almost dead and I dont know why like is there an easier way to get into the raid faster? Secondly I cant stand the catch rates on raid bosses, 4 star Snorlax golden raz one poke ball and I catch 4 star Lapras with multiple golden raz and it runs away and the Lapras had lower CP then the Snorlax

ZanderFire about Pokémon GO, v1.37.2