A common reason for oil burning is low oil levels in the engine. When the oil level is low, the engine can overheat, causing the oil to break down and burn. This is similar to when you're running low on phone battery, and you start to feel anxious - your car's engine feels the same way when it's low on oil.
Another reason for oil burning is worn-out engine parts, such as piston rings or cylinder walls. When these parts wear out, they can cause the oil to leak into the combustion chamber, where it gets burned along with the fuel. It's like when you have a leaky faucet at home - you need to fix it before it causes more damage.
