This game is won most of the time by the other teams mistakes. The bots, lacking the ability to come up with new strategy in the middle of the game, are just programed to do what causes the least chance of mistakes.
The bots are also given more of a gold boost, you can tell after the game when you are even on cs with 10 more kills and even on assists and the bot has 5k+ more gold than you, so they will get stronger faster.
These two things make up for the bots inability to change tactics, come up with a winning trick, or respond immediatly to threats in other locations.
---> There are two ways to beat bots that Never Fail;
1. kill them a lot early so you are more fed than them in 2 or 3 lanes. Not as hard as it sounds but you have to know what you are doing to get the kills and farm.
2. (this one is what you do if you fail option 1) keep all lanes pushed past half way point. when the bots show up to stop you go back and to a different lane and push that. While the bots are pushing the one or two lanes you push the 3rd lane as hard and fast as you can and take a turret (as soon as the turret falls go push the other lanes out).
If you do this you can Not lose.<---- I tested this out in a game were the bots had 60+ kills over us and we won it. Takes a little more time but less time than doing another game to your first win of the day.