There are five ways to maximize xp in dung:
-use the highest floor complexity
-use large floors with more people
-use a good prestige (I.e., complete a lot of dungeons before resetting)
-open as many doors as possible for an xp boost
-don't die
Considering the bot only does C4 smalls, you lose xp there. Considering it probably doesn't open all doors, you lose xp there. Considering your level is low, your prestige is low and you lose xp there. Finally, the boy probably dies a lot because it takes complicated techniques for even humans to avoid death in all dungeons.
Basically, you're in a bad situation. If you do C6 largest solo and know what you are doing (as a human) you can basically only get 30k xp/hr. the bot doesn't do any C6 and doesn't even do C4's well, so yeah. If you really want fast xp, just have people sell you floors. You can get 25k-125k xp per floor this way.