1- You can't keep any type of fish except for a betta in a bowl, esp. Goldfish, they get pretty big and produce a lot of waste
2- You need what is called a air stone or a bubble wand.
3- Do you have a filter? You need one for EVERY type of fish, wild fish that live in huge lakes or seas, don't need a bubbler or a filter because there is such a vast amount of space and oxygen can enter the water and the body of water is so big that filtration is not needed
4- That fish needs at least 5-10 gallons, not a bowl which is probably 1-3- gallons at most
5- Did you cycle the tank, cycling the tank is a process of having the tank grow a benficial bacteria which deteriates ammonia and nitrites, creating nitrates which is less toxic but is pretty toxic in high amounts
I hate putting you down with all this information, but when I first setup my tank i did it wrong and look at me now!! With a Oscar fish!!
Just keep researching you will have the luckiest Goldfish on the planet