I cant seem to lose my belly fat no matter what i do. What should i try?

I try to exercise everyday and walk everyday and drink plenty of water and eat very healthy but no matter what i have a ton of excess belly fat that won’t go away and my Body fat is very high because of i. I’m not sure if i should try any of the fat burners on the market since i’m only 15 but it seems to be my only choice left. Any other ideas?