How to Change Game Mode in Minecraft (No Downloads!)
~ If you want Creative
1) Open up your cheat bar
2) Type in "gamemode 1" (Remove quotations)
3) You should now be in creative mode
~ If you want Survival
1) Open up your cheat bar
2) Type in "gamemode 2" (Remove quotations)
3) You should now be in Survival
Hope I helped!!