Did you ever use the pokemon you were given as gifts in the games or did you try to use a team that you caught all on your own? I know I use hitmonlee from the fighting dojo when I play red or blue but during yellow I use Machamp so I just box my fighting type gift. Then I almost always box Lapras because I already have a water type. Then G/S/C is the only time I ever use my Eevee because I use it for Espeon.