problem with rpg games

hello, im new with emulators and weak on computing so dont know much, well i have many rpg games but some of them dont even load just show white screen lagged, and cant save my games thats list of games:
Final Fantasy: The 4 Heroes of Light
Children of Mana
Dragon Quest IX: Sentinels of the Starry Skies
Kingdom Hearts 358/2 Days
Final Fantasy Crystal Chronicles: Ring of Fates
Final Fantasy XII: Revenant Wings
Final Fantasy III
Final Fantasy IV
Final Fantasy Crystal Chronicles: Echoes of Time(now trying to play this game, can someone help to make it work to save?)
Lufia: Curse of the Sinistrals
Golden Sun: Dark Dawn(cant start it)

for golden sun dark dawn in n$gba save option with gba bios and reset and it will start , if it works please click my star below my name to add more reputation thanks.

thnx ill try that