yes,but,you'll have to do extensive study on whats compatible,maybe do a bit of mods for it to fit well,and still be unsure.The costs will be as much as a decent cycle itself.dont trust these so called disk brake setups.even half decent ones start from over 7k.so,if you do find disks on a cheap bike,you can imagine how much cost cutting they do.
or maybe,if you get compatible brake pads,like 'koolstop' or decent OEM brakepads(oem of major brands/phoren brands) which will go with your current setup, the compound change itself will make a LOT of difference,if set up well.Also,RIm condition(i assume you have rim brakes) also matters.grease/muck/rust could play a big role in brake performance.
IMO you dont mess with brakes unless you have considerable experience with bike repair.best left to pro's,as the brakes are vital.finding competent bike servicers who dont use a hammer as a laakh dukhon ki ek dawa is another story in itself.
did you size it for yourself?dont go by the usual seat adjustment will fix everything.it wont.Firefox stations usually try to palm off anything and everything in stock,to clear it, on you,unless you know what you are doing.