iPhone 4s won’t turn on or charge after battery replacement

I found this iPhone 4s lying around in my closet, it worked for one week until i had to get the battery replaced. When i replaced the battery and connected it into a charger, the apple logo wouldn’t show up and it didn’t even show the charge symbol. It was just plain black with nothing. The power button is stuck and the home button is nonfunctional. I have tried cleaning the charging port and checking if the battery is placed in correctly, but still nothing. Is there any way to fix it, if so it’ll mean a lot as this iPhone holds some precious memories.