I get a bug, whenever i try to play offline i can't see the weapon text, nor can i choose a weapon. I only can use secondary weapons, yet the bots can use any weapon. why is this? And how do i fix it?

you checked advanced mode, a new gamemode.
go to "create game" (or whatever its called) and in the top right corner should be advance mode

Lol... just start killing those bots. You have to earn your primary weapons in advance mode ;)