how to beat gym leaders

1ST gym leader is a water type and fire type grass type use fire grass and eletric types to beat him.2ND pschyic use Dark types to beat her.3RD Is a Bug type so use a fire types to beat him.4TH gym leader is a eletric type so use a pokemon that knows ground moves.5TH gym leader is a ground type so use a grass type to beat him.6TH is a flying type gym leader so use eletric types.7TH is a ice gym leader so use fire types to beat him.8TH she is the last gym to beat to go challnge the eilte4 use a ice type to beat her then to beat the eilte4 is too use ghost type a pachiyc and a fire type and a dark type