I agree with Pierre about adding weights. Start with something like 5x5 and add weight to the bar each week (i.e. basic beginner program), once you can no longer do that then it’s time to get fancy with heavier weights / fewer reps and lower weights / higher reps. Plus yeah definitely need a calorie surplus (physics!)
but i think i’d first ask, what are you trying to achieve here? Do you want to have a stronger sprint? And what kind of sprint we talking? standalone sprint, or sprint at the end of a race (i.e. after having already done 4K kilojoules of work)? Or are you trying to bulk up to get buff (which is fine btw), and performance is kind of an afterthought.
If you’re performance-focused, i’d suggest to train to improve the specific parameters you’re targeting, and let the chips fall where they may in terms of how bulky you get. You’ll notice if you look at cyclists and track sprinters that their bodies all look different, and it doesn’t necessarily impact or reflect on how fast they are. Like remember Robbie McEwan? Blistering fast sprint (former BMXer) but not particularly huge, at least nothing compared to Robert Forstemann (who i think is pictured).