low water pressure in one faucet but not another?

hi first time poster . like the topic says i have low water pressure in one faucet but not another . i live in an apartment 3rd floor and tghe other day i turned on my faucet only to find no water coming out . well it was back on hours later but the water was running incredibly slow for hot and cold water =(. in my bathroom which is in the room right next to my kitchen the water is prefectly fine. my father in law seems to have the exACT same problem at his house but hes just dealt with it for about 6 years now and i cant lol. i have tried leaving the kitchen faucet on , and going in the cellar and turning the water main off and then slowly back on again but that didnt work.