Right Weapon for the Job
Although Titanfall 2 doesn’t really make a point of telling you this, your primary and secondary weapons for your Pilot are basically your weapons for dealing with the two different types of enemies you’ll come across. Your primary weapon is what you’re going to be using to pick off other Pilots and grunts running around the map, whereas your secondary weapon is your anti-Titan weapon capable of dealing far heftier amounts of damage to the towering metallic beasts. Making sure you’re using the right one for each scenario will see you tearing through enemies much more effectively, but there’re other things to consider too.
If you prefer to sit back and pick your enemies off, take a look at some of the other weapon classes. There are sniper rifles and LMGs for those who like to sit back, or shotguns and submachine guns for those who like to get up close and personal.
The same applies for your Titan. Make sure that you’re making good use of not only its standard attack, but its special attack for dealing big chunks of damage to other Titans. Mixing and matching these to take down the different enemy types you’ll find is detrimental to your success.