Habits
Do not die alone for a site you can retake
In one line: If the attack comes in numbers, give up the site and wait for your teammates.
Why
One against four is almost always lost. Alive, on the other hand, you can give information, slow the attack and join the retake. A site you give up can be taken back; a dead player cannot.
How to train it
When you hear three or more enemies coming, call it and fall back to a spot from where you can come back in with the others.