YOU SAID:

i went to the store to get food

INTO JAPANESE

私は食べ物を買うために店に行きました

BACK INTO ENGLISH

i went to the store to buy food

INTO JAPANESE

私は店に食べ物を買いに行きました

BACK INTO ENGLISH

I went to the store to buy food

INTO JAPANESE

お店に食材を買いに行きました

BACK INTO ENGLISH

I went to the store to buy ingredients

INTO JAPANESE

お店に材料を買いに行きました

BACK INTO ENGLISH

I went to the store to buy ingredients