Other Fuel System Pump problems of the 2011 Kia Motor Sportage

Purchased vehicle at a reputable dealership in March 2019. On June 12,2020, vehicle would not start while stationary in the driveway of my residence. Roadside assistance diagnosed dead battery. Took vehicle to the kia dealership where I purchased the car to request new battery. They are stating that the car now needs a new battery and a fuel pump. I had no electrical or fuel related before June 12, 2020.

So I had pretty much a full day of driving and my manual transmission 6 speed 2011 Sportage, that until today the only problem I noticed was that sometimes to me it felt like when I up shifted or began to go into first that it wasn't going all the way into gear; and at times on the highway it wasnt accelerating normally and my gas mileage is about 50m less per tank than it has been the past 5 mo. (financed to buy as of March). According to the dealership only 1 previous owner and I'm not sure what work had been on it prior to the dealership we are buying through. So today car use in town running completely normal since 11am then suddenly around 6:30 started making all kinds of noise to me a knocking sound plus an almost like revving sound mixed in. We came straight to a gas station and checked the oil with yellow dipstick, as we are almost due for a change, added about a half a quart and started it again to run the oil thru and same sounds but louder. We then turned it back off called a mechanic friend and he came and said without taking anything apart he felt it could b a rod. I then called my mom to come pick up my 3 young kids with me to take them to her house out of the TX heat while we attempt driving home. Started it up again around 8:30 to head the half mile home and very faintly could hear still a knocking and accelerated slowly. Im mot a car genius or anything but not knowing the vehicles personal history prior to March of this year I am worried to drive on highway the 40-50 mile distance to get to the nearest kia workshop. I absolutely loved my soccer mom car until today and now im afrraid to drive it after reading the recalls. Is my vehicle a part of any recall? my clutch it new and my fuel pump as well according to the dealership we are buying through so I know it isnt that. Just want to feel safe and have my commute back to normal again. . . What's going on??.