The food you get at a restaurant tastes different than homemade by design, because why would you pay restaurant prices for food you can make at home?
This difference in flavor often come from the chef adding way more salt, fat or spices than you would ever add at home, but sometimes restaurant flavor is the result of a simple cooking trick like pressing a dimple into your burger before cooking it.
This video by Bright Side reveals 14 Cooking Secrets Used By Restaurant Chefs, including the secret to cutting the perfect slice of cake (hold knife under hot water before cutting) and how to pick the perfect lemon (the thinner the peel the more sour the lemon).