I basically didn't think that fish and chips were that delicious, because it was oily.
But the store that someone introduced me to had great fish and chips.
One needs to choose the store carefully to get delicious food.
ご質問ありがとうございます。
"I basically didn't think that fish and chips were that delicious, because it was oily."=「フィッシュアンドチップスは基本的にあまり美味しいとは思わなかった、脂っこいから。」
"But the store that someone introduced me to had great fish and chips."=「でも、誰かが紹介してくれたお店には素晴らしいフィッシュアンドチップスがあった。」
"One needs to choose the store carefully to get delicious food."=「美味しい食べ物を手に入れるにはお店を注意深く選ぶ必要がある。」
ご参考になると幸いです。