My device specs : vivo y21, 4 gb ram + 1 gb ram = 5 gb ram in total, 2.3 ghz octa core processor, 64 gb storage (52% used)

When I was at school, my classmate ask me if i can play minecraft together then i said yes so i open minecraft click play then create a new world, I also change the settings of the world too, here are the settings :
gamemode survival
difficulty normal

friendlyfire, show coordinate, fire spread, tnt explode, respawn block explode, mob loot on, natural regeneration, tial drop, immediately respawn, allow cheat, do sun cycle, mob spawning, mob griefing, entity drop, weather changing, command block are on

All beta features are off.

After changing the settings I click on create on top left. It said generating world building terrain but after like 10 seconds nothing happen and instead showing "disconnectionScreen.unexpectedPacket" thing. I never met this thing before everyone never met this before so i screenshot to make a report. Then i click on ok below the message but that world still in worlds menu with size of 0.01 mb. I click on that world again it start generating world then loading resource then let go. the chunk is ok gamerule is ok everything is completely ok