"If you're not allowed to play, that makes it challenging!"

If you're having that experience with Conquest, you either:

1) Aren't USING the right teams,
2) Don't HAVE the right teams,
3) Have terrible mods, or
4) Aren't using good data disk combinations (obviously this is somewhat RNG dependent on what you get)

So identify which one(s) it is, and then adjust. There's always been tactics to adjust for opposing squads outrunning you.