There is strength in numbers. Any GSF team comprises at least eight players. The strength in numbers, however, comes not only from the actual number of players, but also from the fact that eight players together can make a plan. Form a strategy. If everyone knows what all the others are doing, support can be given as needed. This illustrates the most important parts of good teamwork. The first is sticking together. If a single player goes to a satellite occupied by the enemy on their own, even the defense turrets may not have a hard time finishing them off. But when going in together, the damage output of the enemy is divided amongst you and your chances of survival increase greatly. The second important part of teamwork is communication. If people know what you are doing, and if you inform them about what the enemy is doing, they can react to it by, for example, coming over to help out. They may even be able to anticipate next moves and drop mines and repair drones accordingly.
Don’t be predictable
Being unpredictable will give you a fighting chance even against the most seasoned pilots. There’s multiple ways to be unpredictable, tough. Flying erratically is the most obvious, but you can also surprise everyone by using unusual components (as long as they are viable). Trying new strategies may surprise your opponent enough to give you the edge. Flying to different parts of the map than you might otherwise (this includes up and down) may give unexpected tactical advantages. The maps are big 3D spaces, after all. However, since most of us never get any further than driving cars IRL, we tend to stick to a small slice of the vertical height the maps provide. This space may in most cases give you the shortest path to the enemy, but it is also the part of space that is usually best covered by enemy railguns.
Aside from doing things to be unpredictable, simply flying while not being completely predictable is a bit of an art form. One thing to avoid at all costs, however, is taking revenge. In the case of seasoned pilots, trying to get revenge on them is a bit like serving yourself to them on a silver platter.
Have a backup plan
Every strategy you ever use has a counter-strategy. If your opponent is skilled, they’ll be able to think of that counter. Therefore, it is smart to think ahead and have a strategy at the ready to counter the counter-strategy. Also, if a strategy doesn’t work, think of a new one. Trying the same one again only makes it easier for the enemy to interfere with your plans, since they know what you’re up to. Of course, used strategies may be tried again in different matches, preferably against different opponents.
Or: have at least a little more patience than your opponent.
In some matches, especially those in which you’ll be hard-pressed to win, it is much easier to take up defensive positions. Also, satellites you’ve captured need to be defended. The key to a good defense and to drawing out your opponents effectively is to be patient. Stick to your position. Make a few complicated maneuvers in a tight space, practically taunting your opponents to come closer. They’ll come inching from behind the rock so they might hit you, while you’ve been waiting for them with charged railguns. There are many situations in which the most patient player will win. And seeing as this game seems to be full of impatient people, this shouldn’t be too hard.
Don’t be reckless (unnecessarily)
Or: try to estimate the risks involved in maneuvers before executing them.
In anything you do, it is best to have little risk combined with big payoffs. While this optimum solution proves hard to find in GSF, it is nevertheless necessary to get as close as possible. In GSF this simply means that you want to deal as much damage as possible while taking as little damage as possible in return. Balancing this may be difficult. Trying to not be reckless in GSF may sometimes mean you don’t get that one extra kill in. But if that means you survive the encounter to find a repair drone and go at it again, it was probably the best option. Only when it becomes clear that your chances for survival have dropped somewhere below zero do all risks become acceptable.