Me and my squad were doing well against the bugs, but then we tried a bot planet and got decimated. Why are the bots so goshdarn hard?

Bugs and bots only have one thing in common: their utter disdain for democracy. Otherwise, they are very different from each other and require different tactics. Try new loadouts and Stratagems, and be careful not to make assumptions when approaching new enemies – each faction presents their own unique challenge, but also has their own weaknesses to exploit.