The new changes done to the bots were a step too far. Even with the best gear for your lvl, the bots are too hard. Their stats are too high for their lvl and as if it wasn't enough they are hyper buffed, leading to unfair fights. Even against class favorable matchups, the loss chance is high. Apart from that, the variety of matchups is so reduced now, that arena has become a tedious and repetitive task. Consider changing back or reducing the current difficulty. Also include bots of several lvls to make arena dynamic again. This new change also affect the amount of gold which is now reduced. Even if you are winning the amount of damage you can pull off is quite fixed, since bot against bot most times leads to both bots nearly killing each other.