Yes, most of us, if things started going bad, would want to let someone know about it and get help, particularly if you were injured, or in a situation where you couldn't get yourself back to "civilization". A lot of survival scenarios might put you in a position where your goal basically becomes staying alive long enough for someone to come rescue you. In that case, you'd be doing everything you could to be noticed, and there are many posts about signalling here.

Sounds like you're looking for the "evasion" part of SERE training. Survive, Evade, Resist, Escape. Unless you're in Special Forces, you probably can't take the SERE Level-C training down at Fort Bragg, but, there are several publicly available books on survival that include information on avoiding having someone find you that might want to kill you. Searching for some of the military survival texts referenced here in the books section of ETS will give you a good start.