Whenever you're up against a Maeve, your Fireball will be necessary as Maeve is more than able to kill you from a distance. If you're alone with a Maeve and not at low health, you can put up your shield and retreat, or burn her with the fireballs.
I know this one's a bit vague, but it really comes down to your playstyle; skilled Androxus players rely on split-second timing. Try and use this to your advantage; usage of specific parts of your kit at the right times can help you a ton.
In a 1v1 situation Pip will definitely fail without the proper damage to counter Talus. Use his Weightless buff (as of OB62) to use mobility against Talus, and finish him off before he has time to lock onto you again.