See the example.
One company wanted to provide paid services to a person. They made a contract. The company provided services, but the person does not pay, thereby violating the terms of the contract. Or Vice versa, payment for services is received, but services are not rendered. In a smart contract, all conditions are written to the contract code and all operations are performed automatically. If the services are provided, the money is automatically debited from the address of the service recipient. And so on.

It is a pity that so far smart contracts are only applicable in the field of Finance. It would be very useful to apply them to the ordinary life of people.