Futures don't stare at a contract from beginning to end. Futures contracts are traded according to forward contracts. Generally, retail investors only choose active contracts, that is, main contracts. The above picture has been marked for you. There is a turnover when the main contract is made, and there is no turnover if it is not the main contract.

This is the index contract that comes with the software, which is made by collecting the positions and prices of all tradable single contracts in the same period. As can be seen from this picture, gold has always been traded.

By the way, if no one has trained you in this field when you open an account, the service will be too poor. Consider changing it:)