hello, at first i started to play Minecraft and i really like it, and i wanted to play a normal survival game, and started the game with cheat off, after few hours i discovered that i can use cheats and creative mode ( Open-To LAN option ), i'm not gonna lie to you guys i felt like i don't want this, i have searched on internet for any option that allows me to turn creative mode off permanently from my world, something like when you lock your game on hard, but i didn't find that, i keep searching until i found a video shows how to use command block to turn off creative mode, i did everything in this video and it worked but i got one problem,

when i go far from that block, i can turn on creative mode again using commands, when i get close to the command block , it force me to survival again, and so and so,

away from command block ( i can use creative mode by commands,

near the command block, ( force me to survival ),

Well, did i miss something ? and why this happens ? the only thing i need is to turn creative mode and cheats off in my world and never turned on again what ever happen till i delete the world, can i do this ? i don't want any chance to get creative mode or cheats back,

hope you can help me, thanks and have a great day/evening guys,