No matter what some would have you believe, there are people who care about bot royale.
So you've noticed that the bots aren't very smart. No matter, it applies to enemies as well as teammates. And I'm not completely certain that this isn't all intentional on the part of Respawn. Teammates who flake out and disappear and die to zone are not uncommon in the real game. Nor are teammates who push alone into hot zones and die on contact. My bots are doing that a lot this season. Respawn's way of making me feel right at home I guess.
At any rate, keep practicing and you'll find out soon enough that you don't really need a squad in order to win against bots.