Help, I am Stuck on Collector

I used all my health ptions , and revives then used all my units too .... Now collector is on 10 percent health , what should I soooo .... I just need 1-2 revives maybe or is there a way to do it please help 😭.

I used all my health ptions , and revives then used all my units too .... Now collector is on 10 percent health , what should I soooo .... I just need 1-2 revives maybe or is there a way to do it please help 😭.